## TeachersFirst's Numbers & Operations - Grades 9-12

Other TeachersFirst Special Topics Collections

Explore this collection of resources for grades 9-12. Use these resources to meet the NCTM standards in the area of Numbers & Operations. Many of these tools are ideal for use on your interactive whiteboard or in your BYOD classroom. Find topics that relate to the content being taught in your classroom. Share these resources with students on your class website. Use these tools for remediation and review with all students.

Explore the NCTM Standards for all Math Topics

Explore the NCTM Standards for Numbers & Operations for All Grades

Numbers & Operations Resources Grades K-2

Numbers & Operations Resources - Grades 3-5

Numbers & Operations Resources - Grades 6-8

Numbers & Operations Resources - Grades 9-12

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## 25 Results | sort by: Most Recent First Alphabetical Most Viewed First

### NCTM Illuminations Numbers & Operations Resources 9th-12th Grade - NCTM

8 to 12

Illuminations offers this extensive library of lessons and interactives specifically for teaching the Numbers and Operations strand in 9th through 12th grade. The large variety of activities...more
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Illuminations offers this extensive library of lessons and interactives specifically for teaching the Numbers and Operations strand in 9th through 12th grade. The large variety of activities provides opportunities for learning content through many different methods including problem-solving, exploration of rational numbers and proportions, and using data to explore real-world problems such as deforestation of the rain forest. Each lesson includes correlation to standards, assessments, and a complete instructional plan.

tag(s): estimation (47), exponents (44), integers (40), probability (136), problem solving (296), ratios (64), sequences (15), sequencing (29), vectors (23)

#### In the Classroom

Keep this site in your professional favorites to find supporting technology and lessons for teaching numbers and operations. As you find practice or extension ideas for student use or at home reinforcement, share specific links on your class web page or classroom computer center for students to access independently or as you assign them for needed practice. The full site is overwhelming for most parents, so share the specific areas that fit your curriculum.

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### eMathHelp - eMathHelp

7 to 12
eMathHelp offers help and resources for high school and college students. Select Math Notes to find over 2000 notes with explanations and examples for Pre-Algebra through Calculus 2....more
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eMathHelp offers help and resources for high school and college students. Select Math Notes to find over 2000 notes with explanations and examples for Pre-Algebra through Calculus 2. eMathHelp also offers a large variety of calculators in various subject areas featuring step-by-step answers. Browse through the Homework Help section to find answers to previously solved problems or post your own. Be aware, this site will point you in the right direction to finding answers, they don't just give answers!!

tag(s): calculators (40), homework (43), tutorials (47)

#### In the Classroom

Take advantage of the many free calculators for use in your math class; display on your interactive whiteboard or with a projector as you work through problems and see how to solve them. Share a link to this site on your class website for students to use as a resource for homework help. Challenge cooperative learning groups to create math explanation videos using Powtoons, reviewed here, and share them on a site such as TeacherTube, reviewed here.

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### Illustrated Mathematics Dictionary - MathIsFun

4 to 12
This visual dictionary includes over 800 math definitions with almost 800 illustrations. Over 200 of the illustrations are animated examples of math terms and concepts. Use the keyword...more
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This visual dictionary includes over 800 math definitions with almost 800 illustrations. Over 200 of the illustrations are animated examples of math terms and concepts. Use the keyword search to find specific terms or browse by letters of the alphabet. Most definitions also include a link to related concepts and additional information.

tag(s): dictionaries (58), vocabulary (314)

#### In the Classroom

Create a link on classroom computers for easy access to mathematics terms. Use this site as a model for students to set up their own math dictionary defining terms in their own words and images. Have students use Page Flip-Flap, reviewed here, to turn their Word documents, PDFs, and images into an online math dictionary with a page-turning effect!

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### MathScienceMusic - Theolonius Monk Institute of Jaz

K to 12

MathScienceMusic provides a large variety of free, engaging, resources to teach math, science, and music to students from kindergarten through college all created through a collaboration...more
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MathScienceMusic provides a large variety of free, engaging, resources to teach math, science, and music to students from kindergarten through college all created through a collaboration with Jazz legend, Herbie Hancock. Click letters on the homepage to begin your musical experience, then scroll down to view the available resources. Each group of resources includes a video introduction explaining the content. Some of the choices include Scratch Jazz (music and coding) and Groove Pizza (Shapes and Angles and Groove). All activities include a short description along with suggestions for appropriate grade level, concepts taught, and links to additional resources. The videos are hosted on YouTube. If your district blocks YouTube, then they may not be viewable; be sure to look at alternatives for sharing the videos on classroom computers.

tag(s): angles (89), animation (61), brain (67), coding (73), fractions (230), geometric shapes (168), india (32), multiples (31), music theory (45), musical instruments (50), musical notation (39), numbers (192), patterns (87), preK (282), ratios (64), sound (105)

#### In the Classroom

Share activities from MathScienceMusic on your interactive whiteboard with students, then let them explore independently. Scratch Jazz is perfect for teaching basic coding; students interested in music will enjoy creating their own jazz-themed project using the site's tutorial. Add interest to math lessons by taking advantage of the free lesson plans. Be sure to check out the link to Math and Music Standards found on the music and math curriculum page. Have students modify their learning by creating videos of their music creations using My Simpleshow, reviewed here, and share them on a site such as TeacherTube, reviewed here. Be sure to have them discuss their journey from the beginning through the final creation of their project. Team up with your school's music teacher to collaborate on the many activities provided on this site.

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### The Global Virtual Stock Exchange - Stock-Trak

8 to 12

Learn global economics with real world experience playing the stock exchange game. Register on the site to browse and find current games to join or create your own game. Game ...more
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Learn global economics with real world experience playing the stock exchange game. Register on the site to browse and find current games to join or create your own game. Game creators choose from many personalization options including type of currency, trading dates, countries to include, and much more. Additional teacher resources include allowing loan options, downloading of all transactions, and streaming ranks for student result comparisons.

tag(s): competitions (13), currency (18), stock market (14)

#### In the Classroom

Use The Global Virtual Stock Exchange to teach economics in your classroom. Before setting up a competition, share the site with students and allow plenty of time to explore the many resources for learning about the stock market and participating in a game. Be sure to point out the Learning Center including many articles for beginners and stock tools. Set up a challenge with other classrooms or learning partners and compete against each other. Have cooperative learning groups create weekly podcasts discussing market trends and the latest economic news. Use a site such as podOmatic, reviewed here.

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### Growth Mindset Archives - YouCubed at Stanford University

K to 12

Growth Mindset Archives offers a selection of resources for teaching and developing a Growth Mindset in math. Resources include downloadable posters, videos, and inspirational messages....more
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Growth Mindset Archives offers a selection of resources for teaching and developing a Growth Mindset in math. Resources include downloadable posters, videos, and inspirational messages. Click on any title to view. If your district blocks YouTube, the videos may not be viewable. You could always view them at home and bring them to class "on a stick" to share. Use a tool such as ClipGrab, reviewed here, to download the videos from YouTube.

tag(s): brain (67), learning styles (20), professional development (161)

#### In the Classroom

This site is perfect for teachers, families, and students who lack confidence in math. Use information from this site to help change negative mindsets and promote growth mindsets. Share resources on an interactive whiteboard or projector to demonstrate and teach students lessons on perseverance, grit, and more. Include activities as part of your professional development as you discuss math curriculum during staff meetings. Be sure to share ideas from this site with parents on your class website, include parents by sharing stories from your classroom as students work on developing their growth mindset.

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### Investing for Beginners - Fidelity Investments

8 to 12

Investing for Beginners is a YouTube playlist created by Fidelity Investments. The playlist includes 17 videos covering topics such as Investing for Beginners and How to Define Your...more
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Investing for Beginners is a YouTube playlist created by Fidelity Investments. The playlist includes 17 videos covering topics such as Investing for Beginners and How to Define Your Investing Personality. Videos all run less than five minutes in length, making them perfect for quick introductions to financial topics. 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 Online-Convert, reviewed here, to download the videos from YouTube.

tag(s): financial literacy (92), investing (8)

#### In the Classroom

Share videos with your students on an interactive whiteboard or projector. You may be interested in continuing the investment study by having students set up their own practice portfolio for a no-risk option to dabble in stock trading and buying. Use a program like Wall Street Survivor, reviewed here, to do this. Have cooperative learning groups research other aspects of economics or business and challenge the groups to create videos and share them on a site such as SchoolTube, reviewed here.

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### eMathInstruction - eMathInstruction Inc

6 to 12

eMathInstruction offers free e-textbooks for Algebra 1, 2, and Trigonometry. Click on any of the three books to view individual lessons and download in PDF format. Each Algebra 1 lesson...more
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eMathInstruction offers free e-textbooks for Algebra 1, 2, and Trigonometry. Click on any of the three books to view individual lessons and download in PDF format. Each Algebra 1 lesson also includes a video tutorial. In addition, each lesson includes homework classified as either skill building, application, or reasoning. If your district blocks YouTube, videos 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 Online-Convert, reviewed here, to download the videos from YouTube.

tag(s): equations (154), functions (69), inequalities (25), polynomials (28), probability (136), quadratics (31), ratios (64), sequences (15), square roots (20)

#### In the Classroom

Use eMathInstruction lessons to flip your classroom. Assign lessons to students to complete at home, then discuss information in class. Share a link to videos and lessons on your class website for students to use at home for additional practice with Algebra skills. Recommend this site to parents for help in understanding math concepts.

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### ProfRobBob's YouTube Channel - Rob Tarrou

7 to 12

This YouTube channel includes a growing selection of math instruction videos for Algebra through AP Statistics. Browse through videos on the home page or go to the site's playlists...more
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This YouTube channel includes a growing selection of math instruction videos for Algebra through AP Statistics. Browse through videos on the home page or go to the site's playlists for videos grouped by topic. 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 Online-Convert, reviewed here, to download the videos from YouTube.

tag(s): angles (89), area (71), charts and graphs (200), equations (154), factoring (32), functions (69), inequalities (25), polynomials (28), probability (136), problem solving (296), quadratics (31), statistics (127), video (269), volume (53)

#### In the Classroom

Share these videos on an interactive whiteboard or projector. FLIP your classroom and have students view the videos at home to discuss and apply the next day in class (this is an excellent option if your school blocks YouTube). Use the videos to introduce or practice any math topic and assign others from the series for homework. Be sure to provide this link on your class website for students (and their families) to access at home for additional math practice.

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### Celebrate Pi Day - NBC Learn

5 to 12

Celebrate Pi Day (or any day) with this collection of 9 video stories and accompanying activities. Taken from NBC news stories, each short video includes an opportunity to apply math...more
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Celebrate Pi Day (or any day) with this collection of 9 video stories and accompanying activities. Taken from NBC news stories, each short video includes an opportunity to apply math concepts to real world situations. Use tabs on the side of each video to view a transcript or suggested math and statistics activities relating to the topic.

tag(s): journalism (58), news (259), pi (27), problem solving (296), statistics (127), video (269)

#### In the Classroom

Stash this site in your bag of tricks for when you need an easy to teach lesson for a teacher in training or a substitute teacher. Use the videos as inspiration for finding math in other news stories. Stretch learning and have students find videos and create their own math and statistics questions for classmates to answer. Have students use Vizia, reviewed here, where students can embed questions, comments, and polls into videos

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### Which One Doesn't Belong? - Mary Bourassa

5 to 12
Which One Doesn't Belong provides stimulating and challenging math puzzles. Select a category to find puzzles related to numbers, shapes, and graphs. An additional link contains several...more
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Which One Doesn't Belong provides stimulating and challenging math puzzles. Select a category to find puzzles related to numbers, shapes, and graphs. An additional link contains several incomplete puzzles to finish. The site does not provide a "correct" answer. Each puzzle has multiple (possible) answers providing opportunities for all to choose and justify their response.

tag(s): critical thinking (116), logic (249), problem solving (296), puzzles (205)

#### In the Classroom

These puzzles are perfect for use with an interactive whiteboard or projector. Use the puzzles as a warm up for any math class or use for journal writing prompts. Use this site for discussion and debate with your gifted students. Challenge students to create puzzles and have classmates solve. Have cooperative learning groups create online books of their puzzles using a tool such as Bookemon, reviewed here. Have students create an annotated image including text boxes and related links using a tool such as Thinglink, reviewed here.

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### The Three Acts of a Mathematical Story - Dan Meyer

7 to 12

This blog details very specifically how to introduce and teach mathematical tasks through storytelling. Begin by choosing the first link that introduces the storytelling tasks through...more
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tag(s): equations (154), geometric shapes (168), money (185), percent (80), perimeter (29), variables (20), volume (53)

#### In the Classroom

Work together with a colleague to learn more about the Three Acts Mathematical tasks strategy. Use tasks in your classroom for enrichment for gifted students, as extra credit, or as weekly homework. Have students make a multimedia presentation using one of the many TeachersFirst Edge tools, reviewed here, to share steps for the problem solving process.

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### Universal - Free Algebra Equation Solver - Stanislav Kublanovsky and Yuri Matiasevich

6 to 12

Download the Universal - Free Algebra Equation Solver software from this site. This is the only section of the site that is FREE. However, this tool alone makes the site ...more
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Download the Universal - Free Algebra Equation Solver software from this site. This is the only section of the site that is FREE. However, this tool alone makes the site fabulous! The Algebra Equation Solver solves and explains algebraic equations with step by step instructions. Verbal and written commentaries accompany each solution. Think of it as your free, at-home Algebra tutor! Large, colorful fonts and clearly expressed equations on a whiteboard view offer easy viewing options. Use the four toolbars, the menu bar at the top, and the status bar at the bottom to navigate any problem.

tag(s): equations (154), exponents (44), logic (249), problem solving (296)

#### In the Classroom

Introduce this site on your interactive whiteboard or projector and use throughout the year to demonstrate and practice solutions to any Algebra problem. Be sure to include a link to this download on your class web page for students to use at home. Share with parents who are looking for tutoring or support for their student.

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### Support for Problem Solving Pack - The School Mathematics Project

8 to 12
The Support for Problem Solving Pack offers several tasks to support math problem-solving skills for high school students. Created as a tool to help develop mental flexibility, tasks...more
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The Support for Problem Solving Pack offers several tasks to support math problem-solving skills for high school students. Created as a tool to help develop mental flexibility, tasks vary in structure and style while requiring you to make use of realistic data. Each problem includes complete directions, possible solutions, and related questions. Some of the units of measure and spellings may differ from those in American English since this is a UK site.

tag(s): critical thinking (116), logic (249), problem solving (296)

#### In the Classroom

Use tasks from the packet throughout the school year to supplement your current materials. Assign as homework or use for math centers. If you are beginning the process of integrating technology, have students create blogs sharing their problem solving process and understanding using Telegra.ph, reviewed here. This blog creator requires no registration. Have students share the blog entry with a small group or partner, who is to ask for clarification where needed. Explaining their writing will help students internalize the problem-solving process. Challenge students to create their own problem-solving tasks to be solved by classmates.

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### Mathematics Interactives and Lessons - SAS Curriculum Pathways

1 to 12

SAS Curriculum Pathways offers over 400 interactives and web lessons for math. Topics range from Numbers and Operations to Trigonometry. Browse resources by category, type, required...more
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SAS Curriculum Pathways offers over 400 interactives and web lessons for math. Topics range from Numbers and Operations to Trigonometry. Browse resources by category, type, required plug-ins, or level. Each resource includes a short description, estimated time to complete, and appropriate age levels. All activities correlate to state and Common Core Standards. Click the Standards link in each lesson to view corresponding standards for each activity. Create an account to save items to favorites and connect to your school. Generate an account code for your students to create student accounts. Be sure to disable your browser's pop up blocker for this site to allow interactives to load.

tag(s): angles (89), charts and graphs (200), data (156), decimals (126), equations (154), factors (40), fractions (230), geometric shapes (168), mixed numbers (14), operations (119), order of operations (40), polynomials (28), probability (136), quadratics (31)

#### In the Classroom

Use interactives and lessons from this site to supplement classroom instruction. Demonstrate how to use this tool on your interactive whiteboard or projector. Allow students to explore the site independently on classroom computers. Be sure to include a link to activities on your classroom webpage. Use this site to differentiate for different student levels.

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### Secondary Sample Mathematics Tasks - The Dana Center - The University of Texas at Austin

K to 12

The Dana Center offers this set of 30 rich instructional tasks correlated to American Diploma Project Benchmarks. Topics include several secondary math topics such as geometry, algebra,...more
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The Dana Center offers this set of 30 rich instructional tasks correlated to American Diploma Project Benchmarks. Topics include several secondary math topics such as geometry, algebra, and trigonometry. Activities include some or all of the following: an introductory rationale, specific directions with images, discussion questions and questions, and sample solutions. Choose the PDF link to print any activity for easy download.

tag(s): data (156), functions (69), patterns (87), professional development (161), pythagorean theorem (33)

#### In the Classroom

Bookmark and use activities from this site throughout the year for homework, centers, or use in your substitute folder for a quick and enriching activity while you are away for the day! Share a link to one of the activities with parents throughout the year as a supplement to classroom resources.

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### Better Lesson - BetterLesson

K to 12

This site offers over 10,000 lessons aligned with the Common Core and the Next Generation Science Standards. The lessons were created by 130 Master Teachers. You can browse resources...more
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This site offers over 10,000 lessons aligned with the Common Core and the Next Generation Science Standards. The lessons were created by 130 Master Teachers. You can browse resources without registering. Click the blue "Browse" button to get started. Choose along the top from Common Core Math, Common Core ELA, or Next Generation Science. Lessons are arranged by grade level or Math, Language, and Science subjects. However, if you want to create your own resources, registration is required. After registering, create a class and then create a unit for that class. Finally, create a lesson for that unit, fill in an objective, select a state standard, and estimate the total time on task. Upload files (or drag and drop) to assign them to the lesson or keep them "unassigned" for later use. Additionally, simply add other users' files to your own curriculum. Search for files by keyword, age-level, and type of format. Click on a result to see every lesson plan using that file.

tag(s): commoncore (89), professional development (161)

#### In the Classroom

Use this site to create lessons for students to follow. Use this site to share inspirational lessons you create or to find inspiration in the work of others. Meet the Common Core goals by using the tools and lesson plans offered at this website. Though the site deals with the technical aspect of lesson planning, many ideas exist to reverse engineer to your own lessons. Create a course to maintain and tweak your lessons for your classes. Expand PD to others in your school or in other schools to learn from the best ideas of others!

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### Study Geek - StudyGeek

6 to 12

StudyGeek is a free math homework help service for algebra through calculus. The help is provided by PhD tutors. View written explanations, video lessons, images, games, various calculators,...more
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StudyGeek is a free math homework help service for algebra through calculus. The help is provided by PhD tutors. View written explanations, video lessons, images, games, various calculators, and more. Search StudyGeek for content or choose from specific courses to find information. In addition to lessons and tutorials, be sure to check out the "Other" link to infographics, math memes, and other interesting math trivia.

tag(s): calculators (40), homework (43), problem solving (296)

#### In the Classroom

Share a link to StudyGeek on your class website for students to access from home. Display information from the site on your interactive whiteboard or projector as a supplement to your current teaching materials. Share the calculators with your students to use both in and out of the classroom.

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### The Math Dude: Quick and Dirty Tips - Jason Marshall, PhD

6 to 12

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.

tag(s): measurement (181), operations (119), podcasts (60), problem solving (296)

#### In the Classroom

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### MathFights - MathFights Ltd.

9 to 12
Compete in the ultimate Math Challenge with opponents from around the globe on MathFights! Registration is required to access this site, and it requires email. The questions are challenging,...more
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Compete in the ultimate Math Challenge with opponents from around the globe on MathFights! Registration is required to access this site, and it requires email. The questions are challenging, much like those in Math Counts and other math competitions. Begin working your way up from division 10 all the way up to the highest level, division 1. Choose the "Fight" button to connect with a challenger. You can also challenge a friend registered with the site. Each round consists of five multiple choice questions to answer within the given time. Speed and accuracy scores determine the winner for each round. Following each round is an opportunity to review each task and view correct answers and explanations for incorrect responses. Be prepared, MathFights will offer a challenge to even the brightest math minds!

tag(s): gifted (80), logic (249), mean (27), order of operations (40), problem solving (296)

#### In the Classroom

Create a class MathFights account and have students play on your interactive whiteboard or projector. Allow students to create their own accounts using Gmail subaccounts and challenge each other from computer centers. Read tips for safely managing email registrations here. Create a link on your class webpage or blog and challenge students to share their levels and competition results. Choose difficult questions from MathFights to use as challenge problems in class. MathFights is excellent for use with gifted students as a Math challenge at any time they have completed lesson objectives.