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Scale of the Universe 2 - Cary and Michael Huang

Grades
6 to 12
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Scale of the Universe 2 zooms into the smallest parts of atoms and out to the largest items in the solar system. Use your mouse or click to view objects ...more
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Scale of the Universe 2 zooms into the smallest parts of atoms and out to the largest items in the solar system. Use your mouse or click to view objects that vary incredibly in size. Use this tool to get a sense of the size of the universe through the relationship between familiar and unfamiliar objects. Click on the object, and an information box pops up. Click on the musical note in the upper right corner to silence the music. Spend many hours perusing the variety of information on this site.

tag(s): atoms (55), measurement (175), planets (128), space (222)

In the Classroom

Use your projector or interactive whiteboard and spend time moving through the objects and looking at the relationships between the sizes. Be sure to instruct students on how to read powers of 10 for understanding of the sizes. This would also be a way to help students visualize the concept of scientific notation! Use the items as part of a "size scavenger hunt." Consider creating visual displays of information similar to this to show relationships between objects. Use a zooming tool such as Prezi or any other multimedia tool.
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Spongelab - Andrea Bielecki, Reg Bronskill and Jeremy Friedberg

Grades
8 to 12
6 Favorites 0  Comments
   
This tool is an amazing, free, online community focused on science with a large number of magnificent animations, case studies, lesson plans, graphics, and multimedia to help explain...more
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This tool is an amazing, free, online community focused on science with a large number of magnificent animations, case studies, lesson plans, graphics, and multimedia to help explain science principles. Use this place to meet others interested in science. Build a profile and add science content from the site. Teachers can transform these pieces to develop lessons and assign to classes. Content is aligned with science texts and other learning materials. Use the community area to find Spongelab related content posted on Facebook, Twitter and Google Plus without leaving the site. Be sure to check out under the What's New, Explore, and Featured Content tabs. Play with the online teaching system to cluster free content together into open and shareable online presentations with notes. The system includes a detailed analytics system to track student experience with the content. One notewothy feature is that images available on the site include licensing information in the caption, so you can easily learn which images are in the public domain or Creative Commons licensed for use in your own multimedia projects! Open them, save them. and cite them to create in any multimedia tool.

tag(s): animation (63), images (277), social networking (112), video (278)

In the Classroom

The power of this site is the ability to organize and share whatever your students need to help them learn. Create lessons using ready-made content found on this site, and keep it all together in one place. This is especially helpful if you teach more than one type of science class. Use the unique science games and content for learning topics in your class. If you teach many student ability levels, you can tailor collections to meet those needs. You can also create collections of Creative Commons or public domain images that students can use to make their own science projects using multimedia tools reviewed at the TeachersFirst Edge (with citations based on the image caption info, of course). Have a student demonstrate how to do this on a projector or interactive whiteboard.

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Numbersleuth: Magnifying the Universe - Science is Beautiful

Grades
K to 12
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This site shows the scale of items from the atom to the universe by using an interactive Infographic. Choose from nine items to begin comparison. Use the blue dot to ...more
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This site shows the scale of items from the atom to the universe by using an interactive Infographic. Choose from nine items to begin comparison. Use the blue dot to zoom in and out by sliding it up and down. The dial gives the difference in size. Be sure to view the Infographic full screen.

tag(s): animals (322), atoms (55), earth (224), measurement (175), planets (128), space (222)

In the Classroom

Provide time for student groups to explore this tool, record observations, discuss information they know, and generate questions. Research information to answer questions. Use this site before discussing the metric system or conversions between various units. It can be used to discuss the use of significant figures and errors in measurements and numbers. Use it as a springboard to measuring and comparing various items that students are familiar with. Embed this on to your class site for easy access by students.
 This resource requires Adobe Flash.

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Now I See! Infographics as content scaffold and creative, formative assessment - TeachersFirst: Candace Hackett Shively and Louise Maine

Grades
6 to 12
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Discover how to use student-created infographics as scaffold or assessment for learning in any middle or high school subject. Many teachers are not "visual" people and struggle to implement...more
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Discover how to use student-created infographics as scaffold or assessment for learning in any middle or high school subject. Many teachers are not "visual" people and struggle to implement infographics because they do not know how to help students. Whether you are a visual person or a "data" person, these pages will help your class get started. See the story of one teacher's journey into using infographics and learn from her experience. Find downloadable files to help: a PowerPoint you can use with students, and a customizable rubric. Don't miss the extensive Resources and Tools page for examples, background articles, and more. These pages grew out of a presentation at ISTE 2012.

tag(s): infographics (51)

In the Classroom

Read through this professional tutorial if you have even considered trying infographics with your students. You will find just the encouragement you need. Mark this one in your Favorites and share the many examples with your students, including student-created examples from a ninth grade class, as you launch your own infographics projects. Let your students "show what they know" in a new way.

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Nature Works Everywhere - The Nature Conservancy

Grades
3 to 9
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Explore and understand nature through the use of these great videos, interactives, and lessons. Learn the science behind nature and why it is very important for every living thing on...more
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Explore and understand nature through the use of these great videos, interactives, and lessons. Learn the science behind nature and why it is very important for every living thing on this planet. Find overarching topics such as Water, Stuff (how nature creates the stuff that we use), and more! View featured educational games, scientist biographies, and featured videos on the homepage. Take a video tour of the site, find lesson plans, and read about scientists involved in the project through the tabs along the top.

tag(s): conservation (128), natural resources (58), scientists (69), water (134)

In the Classroom

Be sure to save (bookmark) this page on your blog, wiki, or class website for easy access. Provide a link on a classroom computer for ease of access during an ecology unit. Allow opportunity for students to look at the information on the site to find a topic of interest to them for further research. Or choose a project to do together as a class or school in connection with Earth Day. Create an awareness campaign for students to educate others in the community about the science behind nature, why it is important to conserve, and simple actions that everyone can do. Have students create online posters on paper or do it together as a class using a tool such as Web Poster Wizard, reviewed here, or PicLits (reviewed here. Connect the science learned in your class with the nature around your students lives.
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Makerspace - MAKE

Grades
10 to 12
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Join the movement of educators and students who are focusing on making instead of consuming. Students identify an interest and work on a project of their creation to present at ...more
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Join the movement of educators and students who are focusing on making instead of consuming. Students identify an interest and work on a project of their creation to present at a Maker Faire. Unlike Science Fairs which focus mostly on competition, Maker Faires showcase student work and innovation. With focus now on STEM and doing science, Maker Faires are a great way to increase excitement in the STEM areas and careers. The Maker Playbook is an easy way to become familiar with the movement.

tag(s): inquiry (34), science fairs (25), STEM (173)

In the Classroom

Increase the amount of DIY learning in your classroom by joining the Maker Faire movement. Not close to an actual Maker Faire? Implement ideas in the playbook to increase the amount of STEM in your class and a new way to learn to engage your students and create excitement in careers they have not thought about. Consider holding an in-school Maker Faire of your own with parent help.
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STEM Curriculum - Dayton Regional - Dayton Regional STEM Center

Grades
K to 12
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The Dayton Regional STEM Center offers lessons, units, and curriculum materials in STEM subjects for grades K-12. Science, Technology, Engineering, and Math resources are abundant at...more
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The Dayton Regional STEM Center offers lessons, units, and curriculum materials in STEM subjects for grades K-12. Science, Technology, Engineering, and Math resources are abundant at this center for hands-on STEM! Primarily it is a curriculum resource for teaching. Search by grade level, subject, or industry. There are captivating hook videos about power and propulsion, sensors, manufacturing, humans and medicine, and air vehicles. Lesson ideas are complete and well thought out. Some have downloadable activities, some are video clips, some are tangible hands on activities, but all are thought provoking. If your district blocks YouTube, then the video clips may not be viewable. You could always view the videos at home and bring them to class "on a stick" to share. Use a tool such as KeepVid reviewed here to download the videos from YouTube.

tag(s): aircraft (25), atmosphere (31), aviation (35), data (161), energy (207), engineering (129), equations (151), functions (69), geometric shapes (173), magnetism (38), measurement (175), number sense (96), oil (40), operations (123), ratios (63), robotics (29), scientific method (67), solar energy (39), space (222), statistics (127), STEM (173), teaching strategies (25), water (134)

In the Classroom

Bookmark and save this site as a resource for STEM lessons in your classroom. Use this site as a starting point for individual or group projects or differentiating lessons in your classroom. Search this site for some new ideas to implement in your classroom. Share the Student tab on your class website for students to explore several "kid friendly" topic such as Fish-y Gardening, Pirate Race, Slime Time, Engineer Girl, Build a Bot, and more. Students who complete one of the "kid friendly" projects at home could develop a presentation using a tool like Zoho Show (similar to PowerPoint, but easier and free) - reviewed here), or a multimedia presentation to share with the class. For tools and ideas about creating multimedia presentations see one of many TeachersFirst Edge tools reviewed here.
  This resource requires Adobe Flash and PDF reader software like Adobe Acrobat.

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Venngage - Venngage

Grades
7 to 12
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Like the looks of Infographics but wish it were as easy as creating a Powerpoint? This website aims to empower you to easily create infographics in a short time. It ...more
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Like the looks of Infographics but wish it were as easy as creating a Powerpoint? This website aims to empower you to easily create infographics in a short time. It is worth the free registration to gain access. Create beautiful Infographics by creating a title and then choosing a template or color scheme. Create your own templates using a range of color, label, and font choices. Click on the elements on the template to change the words, add widgets, create charts, and more. Use the slider along the top right to move between edit mode and preview mode. Go beyond traditional charts by including word clouds, treemaps, bubble charts, and more. Click Save as Template (helpful in creating labels and examples for students to follow) to save your style for later. Click Publish to make the Infographic public or private. You can save the Infographic as an image, share via URL, or use an embed code to place on a wiki, site, or blog. Click on your dashboard to view additional templates shared by creators and to find your Infographics.

tag(s): data (161), infographics (51), posters (40), vocabulary (321)

In the Classroom

Consider creating Infographics of material learned in class and for better understanding and connection with other topics and the "real world." Make curriculum content more real with infographics that students can relate to. Have students create their own infographics with this site to display what they have learned from a unit of study, how vocabulary words are related to the unit content, or as a review before a test. It could even be a replacement for the test! Connect data found on the Internet to information needed to understand that data. (Consider looking at different ways to show the data which can generate bias.) Use your interactive whiteboard or projector to allow student groups to present an Infographic about a book they've read, related news article, etc. Create Infographics about events such as Earth Day, D-Day, Take Your Child to Work Day, and other observances.

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Chemistry Regents Exams with Explanation - Kent Chemistry

Grades
9 to 12
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Review and practice for Chemistry Regents exam with this site that contains over 1000 questions with answers and explanations. Choose from previous exams beginning in 2002 on up to...more
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Review and practice for Chemistry Regents exam with this site that contains over 1000 questions with answers and explanations. Choose from previous exams beginning in 2002 on up to current exams. Questions are displayed, answers are provided in the same color as the background making them invisible when first viewing the page. To find some answers, you must click a link, depending on how new the practice test is. Highlight the answer or explanation box to see the correct response along with are short explanation. Each page contains 10 questions. Be sure to follow links to view all of the questions from each exam.
This site includes advertising.

tag(s): test prep (97)

In the Classroom

Share this site with students to use when preparing for Regents exams. Display sample questions on your interactive whiteboard or projector and practice together. Share this link on your class website for students to access both in and out of the class.

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Steve Spangler Science Videos - Steve Spangler

Grades
K to 12
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Steve Spangler has brought his fun and educational science experiments to his YouTube page. At the time of this review, the channel had over 400 science experiments in short (approx....more
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Steve Spangler has brought his fun and educational science experiments to his YouTube page. At the time of this review, the channel had over 400 science experiments in short (approx. one minute) videos. Each video demonstrates step by step how to conduct the experiment but leaves it up to the you to decide the science involved. Choose from the featured playlist, browse through uploaded videos, view by fan favorites, or search the channel using a keyword or term to find experiments. Videos can also be sorted by newest or oldest additions. Subscribe to the channel (using your YouTube login) to receive updates when new videos are added. Many include links to further detail and experiment how-tos on Steve's regular web site.
This site includes advertising.

tag(s): experiments (69), optical illusions (13), solar energy (39), water (134)

In the Classroom

Show a video on your interactive whiteboard (or projector) as an introduction before conducting an experiment in class. Stop the video before the ending and have students predict what will happen. Have students journal their thoughts to the science at work in the video. Have students create their own comics to explain a topic using comic-creation tools from this collection. Share this site as a resource for science fair projects or for a school science night. The videos are hosted on YouTube. If your district blocks YouTube, then they may not be viewable. You could always view the videos at home and bring them to class "on a stick" to share. Use a tool such as KeepVid reviewed here to download the videos from YouTube.
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Electron Configuration - Mark Bishop

Grades
10 to 12
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Complete electron configuration is a tutorial activity to practice and understand electron configurations in atoms. Orbitals are often difficult to translate to written notation; however...more
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Complete electron configuration is a tutorial activity to practice and understand electron configurations in atoms. Orbitals are often difficult to translate to written notation; however this website can help. Practice perfectly with this tool because it will provide correct answers you as work. This site can be viewing using Shockwave or Flash.

tag(s): atoms (55), elements (33)

In the Classroom

Use this activity as homework for students to practice figuring electron configurations. While it is not the same as having you tutor them through their homework, it will help more than just trying to remember the lesson taught in class. A valuable use of this tool might be assigning students to do two problems a night with this tutorial to gradually build understanding.
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101 Questions - Dan Myer

Grades
2 to 12
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At 101 Questions, look at the image or video, and then write a question for the picture. The question can only be 140 characters total. You can also click to ...more
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At 101 Questions, look at the image or video, and then write a question for the picture. The question can only be 140 characters total. You can also click to skip a picture. Submit your own picture or video, and get points for the perplexity it inspires, or even join the top 10 lists. Save images to your favorites and classify by tags using your membership. Note that the public can participate so some responses may not be appropriate for younger viewers. Preview and monitor or have an adult operate the site together.

tag(s): creative writing (164), creativity (118), images (277), writing prompts (93)

In the Classroom

Creative fluency begins here! Set up a whole class account. Use this site in language arts: discover main idea, details, cause and effect, or even an inspirational writing prompt. Find ways to group images together based on characteristics or attributes. Use in gifted or enrichment situations, for inspiration for problem-based learning. Sequence the images to find ways to form a logical plot. Find ways to make Perplexors out of the given image. In math, write short word problems to accompany images or videos. Find ways to illustrate vocabulary definitions with examples and non-examples. As a morning work challenge, find questions, details, or even other questions. As a writing challenge, look for the image that conveys the mood or feeling you are trying to convey. In science, submit examples to illustrate scientific concepts. Use to generate scientific method style questions based on the given image. In social studies, find images to convey feelings represented by the time being studied. Challenge students to make a historical statement or political statement by finding and adding to an appropriate image. ESL/ELL students can use this site to help acquire conversation/questioning skills. In world language class, have students generate questions in their new language, even if they do not post them. In art, find mood, theme, style, or self expression images. Be sure to monitor the blog content. Put similar content on your own classroom blog. Challenge students to create their own 101 question images or videos to share on your class blog, inviting viewers to respond with questions in the comments.

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Edublog - Edublogs.org

Grades
K to 12
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Blog your way into the latest social technology using Edublogs. Use the free service to set up a blog as a student, teacher, or campus. This education friendly tool avoids ...more
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Blog your way into the latest social technology using Edublogs. Use the free service to set up a blog as a student, teacher, or campus. This education friendly tool avoids some of the "public interaction" that can offer inappropriate content. Upgrade to more advanced features, to include more options. The additional information on blogging makes this site very valuable even if you already have a blogging platform. Find a plethora of advice, tutorials, pdfs, and lesson plans for blogging. This site is a great reference site for all who are beginning to use blogs, or even look for more varied and effective ways to log with students, or even other classes. Compare this tool to other free blogging tools mentioned in TeachersFirst's Blog Basics for the Classroom . This is a device-agnostic tool, available on the web but also available for free as both an Android and iOS app. Use it from any device or move between several devices and still access your work. App and web versions vary slightly.
This site includes advertising.

tag(s): blogs (85), DAT device agnostic tool (179)

In the Classroom

Save this site as a favorite for all of your blogging needs. Find very informative instructions on blogging, and follow the student blogging challenge lesson plans. Use this tool easily in your Bring Your Own Device (BYOD) classroom since all students will be able to access it for free, no matter what device they have. Peruse through the various subjects and discover how other teachers use blogging in their classrooms. Using the given PDFs on blogging start up, parent guidelines, incorporating into subject areas, and adapt to make them suitable for you. Look at a variety of examples to help devise your own unique style to meet your students' needs.

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In-sites to Einstein - Jen Farr

Grades
7 to 12
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Find everything you would want to know about Einstein on this cool site! Read information such as a bibliography, his work and contributions, specific information about his theories,...more
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Find everything you would want to know about Einstein on this cool site! Read information such as a bibliography, his work and contributions, specific information about his theories, and even quotes he has made. A vast array of sites is listed in each section, and much of the information is actually located elsewhere on the web.

tag(s): inventors and inventions (92), scientists (69)

In the Classroom

Have groups of students spend time perusing the topics and taking time to collect information. Share information learned with other members of the class to get a great background on the life and works of Einstein. Use to understand the theories he developed and discuss the difference between laws and theories. Have students (or groups) explore a specific part of this site and write a blog post about what they learn. If you are beginning the process of integrating technology, have students create blogs sharing their learning and understanding using Pen.io, reviewed here. This blog creator requires no registration. Use this site as part of a unit for the gifted on Great Minds.

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Convert center - Baltsoft Software

Grades
4 to 12
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This quick and easy tool converts between units of measurement. Useful in both math and science, find any kind of conversion for many different types of measures. Use the From ...more
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This quick and easy tool converts between units of measurement. Useful in both math and science, find any kind of conversion for many different types of measures. Use the From and To boxes to find your specific conversion. Find many odd and seldom used units for conversion. (This would be a great time to research where and why some units were used in the past!) Conversions to many different units are included, and a link to the results is displayed to share with others.
This site includes advertising.

tag(s): conversions (27), measurement (175)

In the Classroom

Demonstrate how to use this tool on your interactive whiteboard or projector. Share this link on your class website for students to use both in and out of the classroom. Family and consumer science and world language teachers will also find the U.S. liquid measure and weight conversions handy when converting recipes from English/U.S. to metric and vice versa. Have students create infographics SHOWING the relationships between units of measure during your math or science unit on measurement.

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Squishy Circuits - AnnMarie Thomas

Grades
2 to 10
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Squishy Circuits takes the fear out of electrical engineering and replaces it with fun! Using two different home-made play dough recipes, this scientist devised a way to teach her toddler...more
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Squishy Circuits takes the fear out of electrical engineering and replaces it with fun! Using two different home-made play dough recipes, this scientist devised a way to teach her toddler about electronics. Turning her kitchen into an electrical engineering lab was easier than you may think. Two different play dough recipes provide conductors and resistors. Demonstrate how electricity moves by attaching the play dough to a battery pack and using LED lights. All ages will love "playing" with electronics. Watch the short video explanation of how this project started, and see a great demonstration by the creator of the project. Directions are available video video or as a PDF.

tag(s): circuits (23), electricity (92)

In the Classroom

Budgets are tight and times are tough, but using these activities, we can still keep the lights on electrical engineering. Have students make the play dough in lab or make it in advance for them. Color the recipes with different food colors so that you can easily identify which recipe is which. Explain how the battery packs and indicator lights work, and then let them play with the play dough and the battery packs. Please advise students of safety hazards and caution them against putting sensors directly against the battery pack. Once they have had time to play, have them identify different circuit parts using correct electrical terminology. Challenge students to create more and use their imaginations to try different situations and scenarios. Have different groups share their findings with the class, and allow the groups to share ideas to reach even further.
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Mugeda - mugeda.com

Grades
4 to 12
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Try this high interest animation tool without expensive programs, downloads, or installations. Mugeda is a free, cloud-based HTML5 animation platform, where you can create, share, and...more
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Try this high interest animation tool without expensive programs, downloads, or installations. Mugeda is a free, cloud-based HTML5 animation platform, where you can create, share, and publish HTML5 animation. Basic tutorials guide you to create content with easy to follow instructions. Animation applications include; games, ads, cartoons, tutorials, or persuasive commercials. Use tablets, PCs, smartphones, or tablets. Note that HTML5 works on iPads and iTouches, where most Flash-based sites do not.

tag(s): animation (63), comics and cartoons (65), DAT device agnostic tool (179)

In the Classroom

Bring along Mugeda in your bag of tricks to capture and intrigue all of your students. Use Mugeda to illustrate class content, support debate, persuade, and entertain. The possibilities are endless! Add the creations to your website to share with your community. Use on school news programs to add student content without cost, and make information available for all levels of student abilities. Create commercials for your content or to convey information. In history classes go back in time to envision popular opinion that made history happen. Use during campaigns to promote your side of the debate. Science fairs will never be the same. Highlight projects to create anticipation. Send messages to students using the embedded tool. This programming tool has applications in all subject areas. Gifted students, ELL/ESL students, and remedial students will be captivated by this high interest way of expressing themselves.

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Physics animations - physics-animations.com

Grades
11 to 12
2 Favorites 0  Comments
  
Watch easy to understand animations to explain even the most complex ideas of Physics. Choose from Waves, Optics, Mechanics, Thermodynamics, and Electricity. View an animated image,...more
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Watch easy to understand animations to explain even the most complex ideas of Physics. Choose from Waves, Optics, Mechanics, Thermodynamics, and Electricity. View an animated image, the explanation of the theory, and a video for each concept. Some of the videos require specific plug-ins, depending on your browser. So preview before you share.
This site includes advertising.

tag(s): electricity (92), heat (16), optics (15), waves (22)

In the Classroom

Share this site on your interactive whiteboard or projector. Save this link on your class webpage for students to access both in and out of the classroom. Use this site to help explain many physics concepts that may be difficult to understand. Use in conjunction with other interactives, animations, and laboratory experiences to provide better understanding of the concept.
 This resource requires Adobe Flash.

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NOVA Body and Brain - NOVA/PBS

Grades
3 to 12
5 Favorites 0  Comments
    
Find great information and interactive activities about the human body and brain on this exciting site. Choose from tabs along the top from Body and Brain as well as Nature, ...more
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Find great information and interactive activities about the human body and brain on this exciting site. Choose from tabs along the top from Body and Brain as well as Nature, Planet Earth, and more. Click on the NOVA Education tab to find great lessons and ideas to use these materials for a variety of subjects and ages. View video clips as well as slide shows and other information. Preview these resources before sharing in class. Some parents/communities may consider some material controversial or inappropriate for younger students.
This site includes advertising.

tag(s): carbon dioxide (15), carbon footprint (11), earth (224), environment (325), human body (132), nuclear energy (25), nutrition (159), solar energy (39), space (222)

In the Classroom

Discover some terrific lessons about a variety of topics. For example, under Environment find a great lesson for Capturing Carbon: Where Do We Put It? Find background information to understand the material and questions for discussion that can be used with your class. Find additional resources along the side.
  This resource requires Adobe Flash and PDF reader software like Adobe Acrobat.

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Dib Dab Doo and Dilly too... A smarter safer way to search the Internet - Dibdabdoo.com

Grades
K to 7
2 Favorites 0  Comments
Here you will find a "kid-appropriate" search tool featuring countless general topics: Facts & Reference, Computers/The Internet, The Arts, Strange & Mysterious, Hot Topics, The World,...more
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Here you will find a "kid-appropriate" search tool featuring countless general topics: Facts & Reference, Computers/The Internet, The Arts, Strange & Mysterious, Hot Topics, The World, Science & Math, Reading, Writing, Speaking, Nature, and several others. Within each of the main topics are subtopics. For example, in the Classroom section you will find English, Foreign Langauges, Math, History, Reference Tools, Shapes, Woodwork, Colors, Art, Religion, Philosophy, Social Studies, and Homework Help. There is a ton here to explore! The information includes articles and images/photos.

tag(s): alphabet (86), animals (322), animation (63), clip art (9), colors (80), comics and cartoons (65), cooking (31), crafts (39), creative writing (164), cross cultural understanding (123), cultures (109), dance (27), dinosaurs (55), disabilities (20), diseases (72), drawing (78), fitness (50), flags (22), folktales (55), geometric shapes (173), grammar (212), homework (42), insects (72), journalism (54), measurement (175), museums (53), mysteries (22), numbers (197), nutrition (159), oceans (165), operations (123), origami (15), painting (66), photography (157), poetry (219), psychology (66), rainforests (21), religions (68), search engines (62), seasons (36), sign language (8), social networking (112), spelling (168), sports (99), trivia (19), vocabulary (321), weather (201)

In the Classroom

Help students learn about narrowing and refining research by demonstrating this site on a projector or interactive whiteboard. As you start a project, take the time to SHOW how to use this tool to save time and find appropriate resources. Allow students to explore this site on their own finding relevant information from the various topics. If time permits, have students research a specific topic and create a multimedia presentation using one of the many TeachersFirst Edge tools reviewed here.

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