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XKCD - XKCD

Grades
8 to 12
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Get ready to have a good laugh. Come on over to XKCD, a webcomic of romance, sarcasm, math, and language. Find comics with stick figures featuring mathematical, scientific, and cultural...more
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Get ready to have a good laugh. Come on over to XKCD, a webcomic of romance, sarcasm, math, and language. Find comics with stick figures featuring mathematical, scientific, and cultural humor. Scroll down the page to find Comics/Enjoy! Dig through the archives to find the perfect one for you! Creative Commons License allows reprinting of the comics. Each comic has an individual URL that can be shared to direct students to that specific comic. Be sure to PREVIEW before you share any comics with your class. Our editors found a few that may be questionable depending on the maturity of your students.
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tag(s): comics and cartoons (50), humor (16)

In the Classroom

Add humor to your science, math, language, and current events classes to lighten the mood! Spice up professional presentations with humor, and keep your audience involved. Share the direct URL to any comic that relates to your curriculum or specific topics. Encourage students to create comics with your current content. Have students use one of the tools and ideas included in this collection. Keep your class website humorous with a few comics from XKCD.

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Math Puzzles - Transum

Grades
4 to 12
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Math Puzzles offers a large selection of puzzles with mathematical connections. Scroll through the page to find puzzles using geometric shapes, crosswords, number squares, and more....more
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Math Puzzles offers a large selection of puzzles with mathematical connections. Scroll through the page to find puzzles using geometric shapes, crosswords, number squares, and more. Choose any puzzle to view directions and begin to play.
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tag(s): crosswords (18), logic (162), problem solving (220)

In the Classroom

Share the math puzzles on your interactive whiteboard or projector. Use as a math center or when you have an extra 5-10 minutes of time. Create a link to the puzzles on classroom computers or your class website. This is a great find for use with gifted students to practice logic and problem-solving skills. If you are beginning the process of integrating technology, have students create blogs to explain their problem solving process and understanding using Webnode, reviewed here.

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Nautilus - Nautilus

Grades
9 to 12
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Explore science through fascinating articles in this episodic monthly magazine. Although you can subscribe for a fee, you can also check out past and current issues online for free....more
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Explore science through fascinating articles in this episodic monthly magazine. Although you can subscribe for a fee, you can also check out past and current issues online for free. As they describe themselves, "We deliver big-picture science by reporting on a single monthly topic from multiple perspectives." The combined perspectives include, "the sciences, culture and philosophy into a single story told by the world's leading thinkers and writers." Each Thursday the site publishes a new "chapter" of that month's thematic issue. Past issue themes include Creativity, Illusions, Genius, Big Bangs, and more. Expect to be fascinated by the many angles. You will want to talk and share about what you learn!
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tag(s): careers (135), expository writing (31), scientists (62), writing prompts (53)

In the Classroom

Share these articles as part of a broad discussion of the role of science in our world, such as during a unit on scientists or careers. Share Nautilus with your gifted or science-focused students to spark interests in scientific fields that are new to them. Assign gifted students to select an article and research it further when they have tested out of regular curriculum. They can share their discoveries as a multimedia presentation or write a blog post about them. Use articles from the magazine as fodder for class debates in English class or pull excerpts to use as writing prompts for informational or expository writing. The reading levels are high school and up, so be sure to partner weaker readers with a more capable reader if using this for class assignments. Check specific reading levels of an article by pasting its url into the Juicy Studio Readability Test, reviewed here.

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Inspirograph - Nathan Friend

Grades
2 to 12
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Remember playing Spirograph as a kid? Now you can create and play online with Inspirograph! Choose from fixed and rotating gears, and then change the size of the gears. Change ...more
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Remember playing Spirograph as a kid? Now you can create and play online with Inspirograph! Choose from fixed and rotating gears, and then change the size of the gears. Change the background and pen colors using the toolbar. Click on the + sign to personalize colors. Be sure to view the gallery of saved designs for lots of inspiration when beginning. Click the download icon to save images to your computer.

tag(s): angles (50), critical thinking (108), gifted (62), problem solving (220)

In the Classroom

Use Inspirograph to create fascinating art and to explore math concepts. Have students experiment with different gear sizes (both fixed and rotating) and explain changes. Design a table for students to map out findings such as number of points made when using different gear sizes. Find patterns between the fixed circle sizes and the number of points generated. Work collaboratively with other groups of students to create and answer questions about spirograph designs. Identify the various shapes created.

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Annenberg Learner - The Annenberg Foundation

Grades
K to 12
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The Annenberg Learner Foundation's goal is to advance excellent teaching in American schools. Annenberg Learner's multimedia resources help teachers increase their expertise in their...more
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The Annenberg Learner Foundation's goal is to advance excellent teaching in American schools. Annenberg Learner's multimedia resources help teachers increase their expertise in their fields and improve teaching methods in all grade levels in all subjects. There are video resources for all subject areas. Find lesson plans for all subjects by grade level. A variety of interactives accompany lessons or can also stand alone. Follow the monthly updates and blogs for the latest information.
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tag(s): art history (82), butterflies (12), conversions (36), critical thinking (108), dna (45), earth (178), environment (233), geometric shapes (130), immigrants (31), medieval (31), native americans (87), patterns (61), periodic table (42), renaissance (31), rocks (35), russia (33), south africa (11), spelling (94), statistics (114), volcanoes (55), weather (160)

In the Classroom

In your classroom, explore the interactives available to enhance your lessons. Use the lesson plan library to add a new twist to your subject matter. Organize a professional study of your area of concentration for your department or grade level.
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Corbettmaths - Mr. Corbett

Grades
4 to 12
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This fabulous UK site offers many resources for math practice and instruction. Choose the Videos and Worksheets section to find a large list of topics sorted alphabetically including...more
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This fabulous UK site offers many resources for math practice and instruction. Choose the Videos and Worksheets section to find a large list of topics sorted alphabetically including instructional videos and practice questions. Many also include corresponding textbook exercises. Choose 5-a-day to find another large selection of printables for daily review, choose from three different levels for each date. (U.S. users will need to "translate" the 5-a-day letter equivalents to find approximate grade levels; count backwards from grade 12 being "A.") Conundrums for each day of the year provide short, daily brainteasers ready to print and use. Don't miss the Great Maths Bakeoff, a terrific idea for Pi Day! This site was created in the UK. American English speakers will notice slight spelling differences and use of English currency. There is also mention of Key Stages 3, 4, and 5. In America, these stages equate to Ages 11-14 (Stage 3), Ages 14-16 (Stage 4), and Ages 16-18 (Stage 5). Some of the videos are hosted on YouTube. If your district blocks YouTube, the videos may not be viewable.

tag(s): addition (126), angles (50), charts and graphs (166), coordinates (13), decimals (85), division (97), equations (116), estimation (34), fractions (160), geometric shapes (130), inequalities (22), mean (20), measurement (125), median (16), mode (13), multiplication (120), probability (96), problem solving (220), pythagorean theorem (19), quadratics (26), sequences (12), square roots (15), subtraction (108), time (92), transformations (12), volume (33)

In the Classroom

Use printables and worksheets from Corbettmath for homework, review, and reinforcement of any math concept. View videos together and have students complete practice questions. Create a link to YouTube videos on your class website or blog for students to view at home. Use this site to differentiate for students of all levels. Share this site as a way to review before tests.
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Wall Street Survivor - Greg Isenberg and Rory Olson

Grades
8 to 12
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Learn about the Stock Market and the world of finances without spending a cent with Wall Street Survivor. Create a free account to access free courses and stock market simulations....more
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Learn about the Stock Market and the world of finances without spending a cent with Wall Street Survivor. Create a free account to access free courses and stock market simulations. Once registered, join stock market leagues. Set up your own practice portfolio for a no-risk option to dabble in stock trading and buying. Play against friends using your own settings and options for trading and selling. In addition to investing options, be sure to check out the large library of articles and tutorials teaching how the stock market works. Not all courses are free, but several basic introductory finance courses offer free lessons in an easy to understand format. If your district blocks YouTube, videos may not be viewable.
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tag(s): business (48), financial literacy (93), money (118)

In the Classroom

Introduce this site on your interactive whiteboard or projector. Share articles on personal finance, investing, and more. Challenge students (or groups) to create their own Stock Market Leagues to learn about investing and trading. Use Wall Street Survivor as an after-school program for students to learn about finances and investing. Share this link on your class website for students to explore on their own. Your math-savvy gifted students and finance aficionados will love this one.

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The Free Dictionary - Farlex, Inc

Grades
4 to 12
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The Free Dictionary is much more than a dictionary; it also includes a thesaurus, encyclopedias, a literature reference library, and lots more! Browse the home page to find Word of...more
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The Free Dictionary is much more than a dictionary; it also includes a thesaurus, encyclopedias, a literature reference library, and lots more! Browse the home page to find Word of the Day, Article of the Day, In the News, Quotations, Today's Birthday and Holiday, and Hangman. Choose the Spelling Bee to test spelling skills in levels. Your ESL/ELL students can discover and "play" with English words using this site. Browse to find dictionaries for many other languages and specialized needs such as medical and legal dictionaries.

tag(s): dictionaries (47), quotations (20), thesaurus (21), vocabulary development (91), word choice (14)

In the Classroom

Set this site as the home page on classroom computers for students to read and find interesting articles and games. Create an account to customize the page to display information to suit class needs. Use information found on this site for quotes, interesting trivia, and much more. Display on your interactive whiteboard (or projector) and discuss articles and information with your class.

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Progressions Documents for the Common Core Math Standards - The Arizona Board of Regents

Grades
1 to 12
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Explore the progressions of the Common Core math standards throughout the grade levels. Look at different areas of mathematical standards, numbers and operations, base ten, counting...more
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Explore the progressions of the Common Core math standards throughout the grade levels. Look at different areas of mathematical standards, numbers and operations, base ten, counting cardinality in algebraic thinking, numbers and operations for fractions, geometry, and measurement and data in grades kindergarten through grade five. In grades six through eight explore statistics and probability, expressions and equations, the number system, ratios, and proportional relationships. In high school discover the progressions in algebra, functions, and modeling. Find resources for further development of programs offered to support Common Core mathematics. Discover research, periodicals and groups using Common Core math.

tag(s): commoncore (74)

In the Classroom

Strengthen your teaching of Common Core mathematics. Having an understanding of the knowledge students enter with or without, leads to better preparation for where the students will explore later. Use this as an individual study or even as a professional learning group study with your grade level and department.
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Visual Patterns - visualpatterns.org

Grades
4 to 12
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Explore over 111 different visual patterns and determine what the 43rd step in the pattern would be. Find the equation, use a table, or draw it! This is a fun ...more
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Explore over 111 different visual patterns and determine what the 43rd step in the pattern would be. Find the equation, use a table, or draw it! This is a fun way to work with patterns, equations, problem solving, and geometry. There is a teacher tab with an explanation about assigning patterns to students and an idea for a form to create for students to fill out. Some patterns have a link with additional information.

tag(s): equations (116), geometric shapes (130), patterns (61), problem solving (220)

In the Classroom

Introduce the concept of visual patterns on an interactive whiteboard or projector with the whole group. Give the practice problem and discover ways to solve while using pictures, words, and equations. Break into small groups and give a challenge. Assign individually for challenges. Have students create their own visual pattern while describing the geometrical terms the pattern employs. Add to students' math portfolios.

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Estimation 180 - CC-BY-NC-SA

Grades
6 to 12
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Start building number sense and problem solving ability with Estimation 180. Start with the included handout and have students track their guesses and then calculate the true answer....more
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Start building number sense and problem solving ability with Estimation 180. Start with the included handout and have students track their guesses and then calculate the true answer. Finally, calculate the error of each problem. There is a problem for every day of the school year! This site is teacher created and tested. Try it out!

tag(s): estimation (34), number sense (70), problem solving (220)

In the Classroom

In your classroom begin developing students' number sense immediately. Share on an interactive whiteboard or projector and show how to solve. Assign for homework the day before or even at the beginning of each class. Have students track their errors and see how it improves. Be sure to reflect and measure growth. Join the blog and add comments, questions, or suggestions.
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Mathigon - The Mathematics Education Project

Grades
3 to 12
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Get lost in the world of Mathigon - a visually beautiful, interactive online library of math animations, games, illustrations, and more. Choose to begin with the World of Mathematics...more
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Get lost in the world of Mathigon - a visually beautiful, interactive online library of math animations, games, illustrations, and more. Choose to begin with the World of Mathematics e-book or explore one of several slideshows, movies, and explorations. The Mathematical Origami and Panorama math applications sections are fabulous, though a little text-heavy. Take a trip with Alice in FractalLand using Disney clips to learn about sequencing, fractals, and triangles. Explore Mathigon Ideas containing short video explanations of important math ideas using only graphics and animations. There is much to explore and see on this interesting and colorful site. Be sure to allow plenty of time to find it all! Check back often as new explorations are currently under development. If your district blocks YouTube, then parts of this site may not be viewable. The site operates well on any mobile browser, too!

tag(s): charts and graphs (166), fractions (160), geometric shapes (130), origami (14), probability (96), problem solving (220), tangrams (7)

In the Classroom

If you are a math teacher at any level, this is a MUST-SEE (and share) site. Take the time to explore it for specific sections connected to your curriculum concepts. Students in a BYOD classroom can explore interactives on this mobile-friendly site. Mathigon is perfect for use on interactive whiteboards, projector, and classroom computers. Use Mathigon activities to excite and motivate math students. Some activities require reading so you may need to partner your weaker readers with a buddy. Create a link to games and activities on your class website or blog for students to explore at home. Use Mathigon with gifted learners to extend your current math curriculum.
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Oppia - Oppia.org

Grades
8 to 12
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Oppia is a wonderfully interesting tool for creative learning explorations. The goal of Oppia is to create a one-on-one learning situation similar to that found in a learning dialogue....more
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Oppia is a wonderfully interesting tool for creative learning explorations. The goal of Oppia is to create a one-on-one learning situation similar to that found in a learning dialogue. As you proceed through each Oppia and enter responses, feedback stimulates thinking without providing answers. Browse the gallery to begin exploring math, languages, science, art, social sciences, and programming options. Be sure to choose the "Show beta explorations" option to find many more activities with topics from "Art" to "Welcome to Oppia." The activities offer an exploration of the background and use of the website. If you feel comfortable with technology, try to create and add your own Oppia to the site.

tag(s): coding (85), computational thinking (39), cooking (30), electricity (60), equations (116), fractions (160), homonyms (8), homophones (7), india (25), latin (21), light (52), logic (162), politics (111), puzzles (143), quadratics (26), ratios (48), statistics (114), STEM (245), Teacher Utilities (137)

In the Classroom

Assign Oppia explorations to gifted students as part of your differentiated learning lessons. Use Oppia explorations as part of your flipped classroom. Have students complete explorations and then discuss in class. Add links to (or embed) Oppia explorations on your class website or blog for students to explore at home as a review tool or as an anticipatory set or "activator" to introduce a unit or lesson. Join the Oppia Users Group to collaborate with others to create your own Oppia explorations.

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NCES Kids' Zone - NCES

Grades
4 to 12
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NCES Kids' Zone offers enrichment and informational data. Explore This Day in History, updated daily. Take a poll and compare your own answers with others. Try your problem solving...more
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NCES Kids' Zone offers enrichment and informational data. Explore This Day in History, updated daily. Take a poll and compare your own answers with others. Try your problem solving skills with the mindbender. Learn (and use) the word of the day. The Dare to Compare button leads to short quizzes where you can compare your knowledge with others. You can also explore data about your local schools and libraries and even find college information. Note that the upper menus do not work in all browsers, so not all areas of the site are readily accessible.

tag(s): charts and graphs (166), probability (96)

In the Classroom

Strike an interest in your school and community by finding out where you rank. Investigate college choices. After short quizzes, have a daily comparison of your students to see how they compare in civics, economics, geography, history, mathematics, and science at multiple grade levels. Inspire students to collect data and make their own graphs about school wide topics. Have students create an online graph using ChartGizmo, reviewed here. Dig into probability problems to discover the odds.
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The Math Dude: Quick and Dirty Tips - Jason Marshall, PhD

Grades
6 to 12
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Put math (and related science) fears behind you with podcasts with text transcripts from The Math Dude. The Math Dude makes complex math problems easy to decipher with his easy ...more
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Put math (and related science) fears behind you with podcasts with text transcripts from The Math Dude. The Math Dude makes complex math problems easy to decipher with his easy to follow explanations and tips. Listen to podcasts while viewing text explaining common math questions from basic algebra through SAT prep questions. Be sure to check out the "The Math Dude's Most Popular Tips" and "The Math Dude's Archives." Download podcasts as MP3 files and play through iTunes, QuickTime Player, and RealPlayer installed on a local computer. You can also simply play them from the site. Just be sure you click on the podcast play button and not one of the annoying videos or other ads! This site is loaded with advertisements. However, there is some great material underneath them all. NOTE: This site includes tools for blog users to interact with others. Any visitor can comment on the posts and podcasts or participate in Forums. There are also links to other tip blogs on the web page. Check your school policies on students posting comments, etc. to the web and whether they are permitted to do so anonymously and/or with name or initials.
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tag(s): measurement (125), operations (74), podcasts (65), problem solving (220)

In the Classroom

Check ahead of time to be sure this site is not blocked at school. If it is blocked, consider subscribing to the blog via iTunes to avoid all the ads. External speakers connected to the computer will help broadcast the sound throughout your classroom. Help students follow along by opening the podcast article (transcript) ad-free using the Readability Test Tool, reviewed here. Project the ad-free article as you play the podcast. Share the link on your class web page or select specific episodes links to offer support for concepts you are studying, such as absolute value or sine/cosine. Extend the concept of The Math Dude by having students write and produce their own math tip podcasts or English tip podcasts to explain the grammar demons that haunt their writing. Use a site such as Spreaker, reviewed here.

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Here is Today - Whitevinyl

Grades
1 to 12
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Here is Today offers a visual look at time. Click Okay+ to the next step in time - from today to this month. Click again to go to the year, ...more
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Here is Today offers a visual look at time. Click Okay+ to the next step in time - from today to this month. Click again to go to the year, and keep moving through eras of geologic time until the creation of the universe millions of years ago. Each step includes an arrow pointing to this day in relation to the rest of the timeline.

tag(s): 20th century (56), calendars (40), cells (79), earth (178), geologic time (10), timelines (46)

In the Classroom

View on your interactive whiteboard or projector to help students visualize and gain perspective of events over time. Here is Today would be great to use when studying dinosaurs, in biology class, in Earth science or geology units, or just as part of a philosophical discussion on the world today. This is a great tool to share with students where "our time" fits into the continuum of the earth's 'life." This site could be used with younger students as well. Share the easier concepts (day, month, year) visually during your calendar math lessons. Extend the concept of proportionality by having older math students create simple visual timelines to scale showing their own life vs the life of the United States and other major, longer periods.

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Teaching NGSS Engineering Design Through Media - PBS LearningMedia

Grades
K to 12
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Teaching NGSS Engineering Design Through Media offers a large collection of media-based resources to bring engineering (and Next Gen Science) to students at all grade levels. Think...more
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Teaching NGSS Engineering Design Through Media offers a large collection of media-based resources to bring engineering (and Next Gen Science) to students at all grade levels. Think of design as problem solving by applying science and math. Begin browsing by choosing from grade level options for descriptions of activities including grade level and type of resource offered. Each activity includes additional resource links, correlations to Next Gen Science Standards, and support materials. Discover the most popular resources by viewing the number of times other users designated them as favorites. Learn about wind powered vehicles, mechanical arms, designing a skyscraper, and much more. Everything on the site is free; however, after viewing three resources you will be prompted to create your free account. Account creation offers the ability to save and favorite resources.

tag(s): architecture (63), energy (130), engineering (116), problem solving (220), robotics (22), STEM (245), structures (18)

In the Classroom

Use this site on a projector or interactive whiteboard to discuss and informally assess prior knowledge as you start your study of many different STEM-based topics. Use this site for enrichment or to help non-readers understanding concepts through video. Include it on your class web page for students to access both in and out of class. Enhance learning and have students create a word cloud of the important terms they learn from this site using a tool such as WordItOut, reviewed here. To extend learning have students create a multimedia infographic sharing their findings using Canva Infographic Maker, reviewed here.

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Critical Thinking Puzzles - Eldhose Baby

Grades
8 to 12
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Explore this large collection of problem solving puzzles and activities, posted blog-style. Although the site is rather simple, there is much here to challenge your mind! Some puzzles...more
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Explore this large collection of problem solving puzzles and activities, posted blog-style. Although the site is rather simple, there is much here to challenge your mind! Some puzzles are geared towards mathematics skills while others involve the English language or even logic. This site only contains the problems. No hints or correct answers are included. You may post your thoughts and view comments of others; all comments are moderated. You must sign up using email to leave comments. Find previous puzzles in the Blog Archives. Please note that though comments are moderated, some may still may not be appropriate for your age group. So please preview before you share with students.
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tag(s): logic (162), problem solving (220), puzzles (143)

In the Classroom

Bookmark and use Critical Thinking Puzzles in your classroom throughout the year for problem solving and logic activities. Have students or groups collect ideas and findings using Padlet, reviewed here. The Padlet application creates free online bulletin boards. If your students (or you) have trouble figuring out a solution, post the problem on your classroom bulletin board and revisit throughout the year. View the comments privately, to see if you can give your students "a clue." Why not post a "question of the week" on your class website, using a link to this page! Challenge your gifted students to create their own critical thinking puzzles to share with the class. Create an online book of puzzles using a tool such as Bookemon, reviewed here. (Have them include the solutions in the back of the online book.)

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Futility Closet - Greg Ross

Grades
6 to 12
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Futility Closet is a large collection of entertaining and interesting tidbits from history, language arts, literature, and more. There are mind-stretching puzzles and many thought-provoking,...more
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Futility Closet is a large collection of entertaining and interesting tidbits from history, language arts, literature, and more. There are mind-stretching puzzles and many thought-provoking, true tales. The collection contains close to 8,000 tidbits (some with photos or video clips). More are added daily. Choose from categories such as hoaxes, poems, puzzles, or technology to narrow your search. Scroll through the site to find items by date added. This entertaining site will have you returning over and over to explore and find new bits of trivia! Some of the videos are hosted on YouTube. If your district blocks YouTube, then they may not be viewable.
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tag(s): logic (162), poetry (182), puzzles (143), trivia (18)

In the Classroom

Bookmark and save Futility Closet as a resource for thought provoking trivia throughout the year. Share one item on your interactive whiteboard (or projector) at the beginning of each class for class discussion. Allow your gifted students to explore this site independently, and perhaps even start their own blog collections. Allow students to explore the site and find interesting items to research and explore further. Use the search tool on Futility Closet to search for trivia on current lessons such as Shakespeare, angles, or any keyword - you will be surprised at your findings! Some of the "curiosities" would be great writing prompts for students to take a position and research/support with evidence. Have students share one item they find interesting and create a project using a tool such as Padlet, (reviewed here). Subscribe to Futility Closet using your RSS Feed Reader. Teacher-librarians would love to use these as research prompts. Include one during your school newscast or PTO newsletter (with proper credit to the source, of course).

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ChiliMath - ChiliMath

Grades
K to 12
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Struggling with Algebra? Find some free help at ChiliMath in the form of lessons, worksheets, and activities. Use the math solver to check work, type in any math problem from ...more
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Struggling with Algebra? Find some free help at ChiliMath in the form of lessons, worksheets, and activities. Use the math solver to check work, type in any math problem from beginner algebra to calculus to check any answer. Use the tutorial provided for step-by-step help. Choose from several activities sorted by categories such as strategy games or logic games. The Algebra lessons section contains close to 100 lessons describing Algebra concepts in simple terms along with images, charts, graphs, and examples. Explore lessons either by course (Algebra 1, Algebra 2, etc.) or use the index to search for particular items alphabetically. Take quizzes at the end of many lessons or download practice worksheets through links provided. Also at this site is a link for Basic Math. Clicking on that will give you activities like number writing and counting. On that page, if you look to the left there are grade levels for IXL Math and more free activities. he last link you might like to try is for the Math Games, and there is quite a variety.
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tag(s): division (97), equations (116), exponents (35), factoring (25), fractions (160), functions (53), geometric shapes (130), inequalities (22), integers (21), mean (20), median (16), mode (13), multiples (16), multiplication (120), number lines (32), prime numbers (25), problem solving (220), quadratics (26)

In the Classroom

ChiliMath is an excellent resource whether you are teaching kindergarten/first grade or 8th grade. You might want to set up a class computer with links for concepts your class is working on at the time, or for review. Try using a program like Symbaloo reviewed here to display links to several activities at one time. Practice Algebra concepts by sharing lessons on your interactive whiteboard when introducing or reviewing. Provide a link to particular lessons on your class websites for students to use for review at home.

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