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### What's Special About This Number - Erich Friedman

###### Grades
4 to 12
2 Favorites 0  Comments
This unusual website shares the "uniqueness" of a multitude of numbers. The numbers range from 0 - 9,999. This website teaches you what the only even prime number is, what ...more
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This unusual website shares the "uniqueness" of a multitude of numbers. The numbers range from 0 - 9,999. This website teaches you what the only even prime number is, what a narcissistic number is, what the smallest number with 14 divisors is, and a LOT of other interesting mind-stretching information. The highlight of this website is the ability to click on math terms to learn more about the topic.

tag(s): angles (87), median (23), numbers (194), roman numerals (9), vocabulary (315)

#### In the Classroom

This is one of those sites that you have see to appreciate. Share the site on an interactive whiteboard. In more advanced classes, project a number on the screen as students walk in. Have students try to figure out what might make this number "special." Have students share their responses. This is a great "number of the day/mind-stretcher of the day" activity.

Or have students work on individual computers. Choose several of the numbers that relate to a topic that you are teaching (such as the square root), and have individual students learn about the number and then teach the class what they learned. Extend the idea by having students create "what's special" PowerPoint slides or wiki pages about favorite numbers. What better way to develop true number sense and excitement about math as a mental game.

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### Math Mistakes Info - Russell Blyth, Saint Louis University

###### Grades
7 to 12
0 Favorites 0  Comments
Use Math mistakes to uncover the most common math errors and perhaps learn a little more math as well. This site has "Real Mistakes from Real Student Work" and "Math ...more
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Use Math mistakes to uncover the most common math errors and perhaps learn a little more math as well. This site has "Real Mistakes from Real Student Work" and "Math Facts Students Should Know." Browse "Common Algebra Mistakes," "Common Trigonometry Mistakes," and "Common Calculus Mistakes" by using the drop down menus along the top or through the brightly colored buttons. Each area is also broken down into smaller subject areas such as "Pre-algebra" and "Radical Expressions" with several examples given for each. Each example provides the problem and the example mistake that is made. Rolling your mouse over the problem provides a clue to the error, while rolling over the correction area provides the right answer. There are also explanations of the errors and how to avoid them. Choosing the drop down on the example page allows the student to view as a plain web page or as a pdf file. Other links include "Algebra facts," "Trigonometry facts," and "Calculus facts" which contain flash cards and learning center activities. Note: Links to Amazon for math books of interest are listed, as well as a blog link and links to apparel for sale. Steer students clear of these areas. This site requires Adobe Acrobat. You can get it from the TeachersFirst Toolbox page..

tag(s): equations (154)

#### In the Classroom

Use the flashcards and learning center information to reinforce material taught in class. Students can also look at the examples to make a class hint list of "how to avoid mistakes in our math class." Students can use this information to review incorrect homework and test questions. Have students take turns presenting the most commonly missed questions and how to find the correct answers. Have students correct their own mistakes from a test or homework assignment by using the site. Have students analyze the mistakes first before they roll over to view the hints and the corrections. If you use an interactive whiteboard, the rollovers will not appear as easily, so you can ask students to find them first.

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### Math Videos - mathplayground.com

###### Grades
2 to 10
5 Favorites 0  Comments

As the name suggests, this website offers numerous math videos. The videos answer specific questions (sent in by students). General topics include numbers and their properties, addition,...more
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As the name suggests, this website offers numerous math videos. The videos answer specific questions (sent in by students). General topics include numbers and their properties, addition, subtraction, multiplication, division, fractions, decimals, percents, geometry, measurement, data, word problems, and advanced topics. The website currently features 20-30 videos. New ones are frequently added. Students and teachers are able to send in specific math questions, but the response time is currently "on delay." The videos are mainly audio with simple illustrations. Each video is short in length and requires Flash. You can get it from the TeachersFirst Toolbox page..

tag(s): decimals (125), fractions (229), measurement (177), numbers (194), percent (81)

#### In the Classroom

The possibilities at this website abound. The website offers both audio and visual descriptions for each math topic, thus enabling you to reach your visual and audio learners. Use your interactive whiteboard or projector to share a specific topic with your students. Or make the videos a learning center for students to explore independently, and view the videos that relate to their individual needs. Be sure to provide this link for home use via your class newsletter or on your website.
This resource requires Adobe Flash.

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### Paper Models of Polyhedra - Gijs Korthals Altes

###### Grades
6 to 10
1 Favorites 0  Comments
This simple, "hands-on" website offers PDF files of numerous paper models of polyhedra. The files are ready to print and share with your students. The various geometric solids include...more
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This simple, "hands-on" website offers PDF files of numerous paper models of polyhedra. The files are ready to print and share with your students. The various geometric solids include platonic solids, Archimedean solids, Kepler-Poinsot polyhedra, and numerous others. The files are available in PDF format and require Adobe. Get it from the TeachersFirst Toolbox page..

tag(s): paper folding (4), visual thinking (10)

#### In the Classroom

Why not print a pattern onto cardstock or other thick paper. Then project the image (that you printed for your students) onto a projection screen or interactive whiteboard, while students work independently at their seats. Before you pass out the paper copies, have them view the projected image and predict what it will be.

These shapes can also serve as creative study aids for all subject areas, especially for students who need engaging ways to review. Have students write key terms and questions on the "faces" before assembling the figures, then "roll" them as a study game, testing each other to define or explain terms.
This resource requires PDF reader software like Adobe Acrobat.

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### Harcourt Multimedia Math Glossary - Harcourt Brace

###### Grades
1 to 8
0 Favorites 0  Comments
This online glossary offers definitions and pictures of math terms. Click on the grade level to view terms and definitions that are appropriate for each grade level. Some examples from...more
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This online glossary offers definitions and pictures of math terms. Click on the grade level to view terms and definitions that are appropriate for each grade level. Some examples from the 1st grade list include a bar graph, cone, minus, and pattern. Examples from the 6th grade list include absolute value, coordinate plane, Fibonacci sequence, and countless others. This is an excellent resource for all elementary and middle school math teachers. Even if you do not use the Harcourt math series, the terms are universal.

tag(s): vocabulary (315)

#### In the Classroom

Make a shortcut to this site on your desktop for students to reference as needed during school hours. Be sure to provide this link on your class web page and in your class newsletter, so students can access the information from home.

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### National Library of Virtual Manipulatives - Utah State University

###### Grades
K to 12
0 Favorites 0  Comments
This celebrated collection of countless interactive math activities was created by Utah State University. Use the simple grid to find activities by grade level (pre-K-2, 3-5, 6-8, and...more
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This celebrated collection of countless interactive math activities was created by Utah State University. Use the simple grid to find activities by grade level (pre-K-2, 3-5, 6-8, and 9-12)and topic: numbers & operations, algebra, geometry, measurement, and data analysis & probability. Specific virtual manipulatives include attribute blocks, geoboards, pattern blocks, algebra tiles, and numerous others. Nearly all of the activities require JAVA. Get it from the TeachersFirst Toolbox page..

tag(s): charts and graphs (196), probability (137), tangrams (13)

#### In the Classroom

What a perfect tool to help your visual learners connect the dots in math class. All activities are perfect for an interactive whiteboard or projector. This is also an excellent resource to use for re-teaching skills, additional practice, enrichment activities, or even advanced activities for your gifted students. Learning support teachers will appreciate the alternative way to present math topics in a "hands-on" format. Be sure to include this website as a link on your classroom web page.
This resource requires PDF reader software like Adobe Acrobat.

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### Geometry - 3D Shapes - Annenberg Media

###### Grades
5 to 9
2 Favorites 0  Comments

This website offers motivational and interactive class activities to learn more about 3D shapes. It also shows how to calculate surface area and volume, as well as other mathematical...more
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This website offers motivational and interactive class activities to learn more about 3D shapes. It also shows how to calculate surface area and volume, as well as other mathematical properties about the 3D shapes. Specific topics include surface area and volume, platonic solids, Euler's Theorem, and several others. The Test Your Skills link provides an interactive quiz complete with photos, illustrations, and animations. The About This Interactive link provides standards, goals, lesson ideas, and more. Some of the activities require FLASH. You can get it from the TeachersFirst Toolbox page..

tag(s): area (71), volume (53)

#### In the Classroom

Get your interactive whiteboards (or projectors) ready for this intriguing website. The website introduction page activates students' schema by explaining how we live in a three-dimensional world. Have your students add to the website's list of 3D shapes in their classroom. Complete the web activities as a class (on a projection screen), or have your students team up and research the website in pairs. At the conclusion of the activity, have your students divide into two teams to complete the interactive quiz. Project the questions on the screen, and have the teams discuss the math problem and determine the best answers.
This resource requires Adobe Flash.

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### Count On! - Tribal Group

###### Grades
3 to 9
3 Favorites 0  Comments

What a fabulous math website! The homepage features numerous interactive math activities (updated frequently). There are also links to countless math activities (mostly interactive),...more
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What a fabulous math website! The homepage features numerous interactive math activities (updated frequently). There are also links to countless math activities (mostly interactive), professional information about the teaching of math, and much more. Some examples of the topics include 3D geometry, time, money, Sudoku, weight and measurement, numbers, probability, Tangrams, and numerous others. This British site provides benchmarks and standards. Some of the activities require FLASH. You can get it from the TeachersFirst Toolbox page.. NOTE: the site is slow to open during heavy-traffic times. Please be patient.

tag(s): factors (40), money (184), numbers (194), probability (137), sudoku (16), time (138)

#### In the Classroom

This site is an excellent resource for educational activities both in and out of the classroom. Be sure to visit the "Games" link. There you will find numerous educational math activities that are ready for your interactive whiteboards or projection screens. Share the link on your teacher web page for parents and students to access from home, as well.
This resource requires Adobe Flash.

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### Johnnie's Math Page Fun

###### Grades
K to 8
4 Favorites 0  Comments

This collection of over fifty interactive math activities was organized by a math specialist (former 5th grade teacher). Difficulty levels are color-coded for "Primary Math," "Best...more
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This collection of over fifty interactive math activities was organized by a math specialist (former 5th grade teacher). Difficulty levels are color-coded for "Primary Math," "Best Primary Math," "Intermediate Math," and "Best Intermediate Math." The activities include basic math and logic activities. Some of the topics include Hanoi towers, weights, Tetris, algebra, abacus, point of view, and countless others. What a fabulous resource for any elementary or middle school math class. All of the activities are interactive and require FLASH or JAVA. You can get both from the TeachersFirst Toolbox page..

tag(s): counting (111), patterns (86), symmetry (50), tangrams (13)

#### In the Classroom

What a fantastic website to include in your classroom web page and newsletter. All of these activities are perfect for an interactive whiteboard or projector. This is an excellent resource for gifted students. The activities could also be used for enrichment, additional practice, and re-teaching skills. So turn up the volume and treat your class to a mind-bending challenge.
This resource requires Adobe Flash and PDF reader software like Adobe Acrobat.

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### Origami Now - Peabody Essex Museum

###### Grades
3 to 9
1 Favorites 0  Comments

This website offers excellent instructional videos demonstrating how to create numerous origami projects. There are seven different projects and four difficulty levels. The videos demonstrate...more
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This website offers excellent instructional videos demonstrating how to create numerous origami projects. There are seven different projects and four difficulty levels. The videos demonstrate (step by step) how to create the origami folding projects. The activities (in order of difficulty) include a jumping frog, a duck, a dog, a water lily, a phoenix, a butterfly, and a bat. All of the videos require FLASH. Get it from the TeachersFirst Toolbox page..

tag(s): origami (15)

#### In the Classroom

The activities at this website would be perfect for a geometry class (reinforcing various shapes)or as part of cultural study of Japan. It could also be used to accompany story-reading (keep hands and eyes busy). The videos are ideal for an interactive whiteboard; students can follow (and fold) along with the videos. The videos could also be used as a learning center on your classroom computer. Just put a stack of paper with the computer, and students can practice along with the videos.
This resource requires Adobe Flash.

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### Geometry - Johnnie's Math Page

###### Grades
2 to 8
4 Favorites 0  Comments

This fantastic collection of links was organized by a math specialist (a former 5th grade teacher). The site provides over forty interactive math activities that all relate to geometry....more
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This fantastic collection of links was organized by a math specialist (a former 5th grade teacher). The site provides over forty interactive math activities that all relate to geometry. Some of the specific topics include pattern blocks, square tiles, pentominoes, geoboards, symmetry, tangrams, triangles, angle measures, polyhedra, cartesian grids, tessellations, point of view, and numerous other topics. What a wonderful resource to use with elementary or middle school math students. All of the activities require FLASH or JAVA. Get both from the TeachersFirst Toolbox page..

tag(s): angles (87), symmetry (50), tangrams (13)

#### In the Classroom

This website provides excellent resources to use for additional practice, re-teaching skills, enrichment activities, or even advanced activities for your gifted students. All of the math activities are perfect for an interactive whiteboard (or projector). Treat your class to these fabulous resources.

Be sure to include this link on your classroom web page, blog and/or newsletter.
This resource requires Adobe Flash.

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### Fill-It-In Outline Mathematics - Alexander Bogomolny

###### Grades
1 to 10
1 Favorites 0  Comments
This website is truly a rare find - combining math and reading skills. Although the main page is aesthetically plain, the activities are very challenging. Most are set-up as word ...more
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This website is truly a rare find - combining math and reading skills. Although the main page is aesthetically plain, the activities are very challenging. Most are set-up as word problems that require reading, comprehension, math skills, and more. The "outline math problems" provide students with 3-5 choices. You simply click on the blank and the choices for the answers are provided. There are activities for primary grades (such as basic addition practice) as well as advanced activities for secondary grades (such as geometry concepts). Many of the activities require JAVA. Get it from the TeachersFirst Toolbox page..

tag(s): angles (87), logic (244), multiples (31)

#### In the Classroom

These activities are perfect for an interactive whiteboard (or projector). You could also provide a link to this website in your class newsletter or on your class web page. Many of the activities would provide excellent at-home practice and/or enrichment. Challenge your students to answer a question of the week for extra credit.

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### InterMath - University of Georgia

###### Grades
5 to 9
1 Favorites 0  Comments

InterMath provides lesson plans, quick math activities, standards, definitions of various math concepts, and other math resources. The general math topics include algebra, geometry,...more
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InterMath provides lesson plans, quick math activities, standards, definitions of various math concepts, and other math resources. The general math topics include algebra, geometry, number concept, and data analysis. Each general topic also includes numerous recommended investigations, plus additional investigations, Georgia standards, and national math standards. There is also an excellent math dictionary. Support links include explanations of how to do some of the activities in Geometer's Sketchpad, as well.

tag(s): integers (40), probability (137), statistics (126)

#### In the Classroom

Get an interactive whiteboard and project the math investigations on a screen. Be sure to check out the "constructionary." Allow the students to try to figure out the answers independently at their desks or have them work on individual or partner computers.

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### Cool Math - Coolmath.com

###### Grades
K to 12
5 Favorites 0  Comments

This all-inclusive math website contains activities for all grades (K-12). The website also features countless lesson plans, math problems, math games, and a math dictionary. There...more
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This all-inclusive math website contains activities for all grades (K-12). The website also features countless lesson plans, math problems, math games, and a math dictionary. There are links for students, teachers, and parents. This resource provides excellent introduction lesson plans and highly creative games and activities. Be warned - this website does have some advertisements, but the content is wonderful. If you are looking for a way to review, re-teach, or introduce a math concept, take a few minutes to visit this website.

tag(s): addition (224), decimals (125), logic (244), puzzles (204)

#### In the Classroom

Provide this link in your class newsletter or share the link on your class web page for students to use this resource for additional practice at home. Use selected activities as a center on your single classroom computer or for whole-class practice.

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### Beacon Learning Center: Student Web Lessons - Beacon Learning Center

###### Grades
K to 12
8 Favorites 0  Comments
This website, funded by a grant from the U.S. Department of Education, provides an enormous collection of "web lessons" (interactives) for all grade levels. There are lessons in language...more
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This website, funded by a grant from the U.S. Department of Education, provides an enormous collection of "web lessons" (interactives) for all grade levels. There are lessons in language arts, math, science, social studies, and health. There are too many lesson plans to count - and all are projector, laptop, or whiteboard-ready. Just to give you an idea of some of these unique lessons, some of the titles include "Where is Japan?", "Walrus World", "Piece of Pie", "Medians", "Fence Me In", and "Critter Craze". On the main page, a brief description is provided for each lesson plan. Click Teacher Solutions > Lesson Plans to search by subject or grade level.

tag(s): charts and graphs (196), evolution (101), expository writing (40), industrial revolution (26), native americans (80), primary sources (92), probability (137), symmetry (50), writing (363)

#### In the Classroom

If you want ready-to-go lessons guaranteed to work well on your interactive whiteboard, this collection is a winner. You simply open the activity on the whiteboard and have students tap and drag their way through as you talk with the class. (Invite your most "active" student to be "Vanna White" for a great behavior management solution). Many lessons would work well on laptops or on a computer cluster center, as well.

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### MSTE Online Resource Catalog - University of Illinois, Urbana-Champaign

###### Grades
4 to 12
4 Favorites 0  Comments

MSTE stands for Mathematics, Science, and Technology Education. This is a fabulous website that provides a wealth of interactive activities and printable lessons to use in your classes....more
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MSTE stands for Mathematics, Science, and Technology Education. This is a fabulous website that provides a wealth of interactive activities and printable lessons to use in your classes. There are numerous math and science topics (including chemistry, measurement, probability, geometry, data analysis, physics, algebra and much, much more). Some parts of this site requires Flash. Get it from the TeachersFirst Toolbox page.. Many of the interactives use Java Applets. These will run on most computers without additional software.

tag(s): addition (224), division (159), multiplication (209), probability (137), subtraction (186), vision (79)

#### In the Classroom

Many of these activities would work well with an interactive whiteboard. Read the desciptions of the interactives to see the specific curriculum topics. Many have step-by step lessons included. There is truly something for everyone.
This resource requires Adobe Flash and PDF reader software like Adobe Acrobat.

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### Angle Activity: Up to 180 Degrees - Crick Web

###### Grades
3 to 8
0 Favorites 0  Comments
This angle activity asks students to guess the correct angles - a protractor tool is available. This lesson could be used as a demonstration activity or independent practice. This...more
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This angle activity asks students to guess the correct angles - a protractor tool is available. This lesson could be used as a demonstration activity or independent practice. This estimation activity is excellent practice for students using both obtuse and acute angles. The site requires Flash.

tag(s): angles (87)

#### In the Classroom

Try this one on an interactive whiteboard, then follow up with individual students practicing at a computer or on laptops. Definitely include the link on your teacher web page for additional practice before a quiz or test.
This resource requires Adobe Flash.

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### A Maths Dictionary for Kids - Jenny Eather

###### Grades
2 to 8
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A Maths Dictionary for Kids is a fantastic animated, interactive online math dictionary for students which explains over 600 common mathematical terms and math words in simple language....more
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A Maths Dictionary for Kids is a fantastic animated, interactive online math dictionary for students which explains over 600 common mathematical terms and math words in simple language. Enter the site using the link on the home page and choose (or browse) math terms. Math terms come to life with a click of the mouse! Virtually all terms have an animated or interactive component - for example, choose quadrilateral to view a definition along with an image of a quadrilateral, the next button changes the quadrilateral to a square along with the new definition, choose next again to see the square change to a rhombus, and so on. Virtually all standard math terms are included so users are likely to find anything they want along with some new terms! A link is included at the bottom of each section to print each definition easily.

Another wonderful portion of the site is a new section titled Math Charts. Search this portion by choosing from areas such as numbers, operations, decimals, or much more then choose one of the sub-topics. Each chart includes a visual description of the topic and is specifically created to be printed for classroom use, choose the print button at the bottom of the page and the content will enlarge to fill the most it can in whatever size paper is chosen. Be sure not to miss the blackline masters located at the bottom of this section that contain many printables for classroom use such as fraction strips, hundreds charts, and much more.

tag(s): addition (224), charts and graphs (196), data (157), decimals (125), division (159), fractions (229), measurement (177), money (184), multiplication (209), order of operations (40), percent (81), ratios (63), subtraction (186), time (138)

#### In the Classroom

The math charts are a wonderful resource for classroom bulletin boards, wall decorations, and more - simply laminate for increased durability. Print onto standard sized paper for use in math notebooks or journals. Create a scavenger hunt for students to perform to find words in the math dictionary, have students write definitions and illustrations in math notebooks. View the site using your interactive whiteboard when discussing, introducing, or reviewing math concepts. Share this site through your classroom website or newsletter for reference at home. Share with ESL/ELL and Special Education teachers as a resource to use with students.
This resource requires Adobe Flash.

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### Shape and Space in Geometry - Annenberg/CPB

###### Grades
1 to 8
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Improve your students' understanding of geometric concepts with this outstanding site that strengthens spatial skills. Start by perusing the excellent background information for teachers...more
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Improve your students' understanding of geometric concepts with this outstanding site that strengthens spatial skills. Start by perusing the excellent background information for teachers that highlights the importance of geometry in math education, then investigate the collection of interactive classroom activities designed to provide concrete practice with abstract concepts. The first set of activities is concerned with identifying properties of shapes; the second focuses on visualizing how objects will look when moved. Check out the overviews for each activity which describe the rationale and connection to NCTM Standards.

tag(s): geometric shapes (169), measurement (177), space (226), symmetry (50)

#### In the Classroom

Share the one or more of the interactive activities with your interactive whiteboard or projector. Then set up a computer station for students to rotate through and practice the activities on their own.

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### Illuminations - NCTM

###### Grades
K to 12
4 Favorites 0  Comments

This fabulous collection of lesson plans, activities, and web links from NCTM is a professional treasury for math teachers. The two menu selections at the top, Lessons and Interactives,...more
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This fabulous collection of lesson plans, activities, and web links from NCTM is a professional treasury for math teachers. The two menu selections at the top, Lessons and Interactives, are actually drop down menus to find lessons by grade levels, Brain Teasers, Mobile Apps, a Web Sketchpad, and more. The interactives are a challenging practice for concepts ranging from basic fractions and graphing to congruence theorems. Narrow your search with keywords. Each activity includes a description and grade level recommendation. Highlighted activities and Lessons on the home page change often. Many lesson plans also include technology links, but others are low-tech or no-tech. Illuminations is created by NCTM.

tag(s): data (157), measurement (177), numbers (194), operations (122), probability (137)

#### In the Classroom

Keep this one in your professional favorites to find supporting technology for any math concept. 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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