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Interactive
Cool Math

Coolmath: Coolmath4kids: Demolition Division

For Students 3rd - 5th
Solve division problems to destroy enemy tanks and defend your base! Contents: Division facts to 12
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Lesson Plan
Can Teach

Can Teach: Grab and Add

For Teachers 3rd - 5th
Young scholars will practice their addition skills through this game. Lesson plan indicated for 1st-3rd grades.
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Activity
Quia

Quia: Adding to 10

For Students 3rd - 5th Standards
This website for young children gives them practice adding sums to 10. Problems are presented as teddy bears to add up with the corresponding digits that represent the problem symbolically.
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Unit Plan
Khan Academy

Khan Academy: Making Small Numbers in Different Ways

For Students Pre-K - 1st Standards
Practice making a number by adding other numbers. All numbers in these problems are less than 10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Lesson: Clock Arithmetic and Cryptography

For Teachers 3rd - 8th Standards
This lesson plan is designed to guide students in practicing their basic arithmetic skills by learning about clock arithmetic and cryptography. Linked resources include helpful applets.
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Interactive
Cool Math

Coolmath: Coolmath4kids: Alien Addition

For Students 1st - 3rd
Blast alien invaders to practice your addition!
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Activity
NumberNut

Number Nut: Subtracting Through Twenty

For Students Pre-K - 1st Standards
Review or learn the basics of single-digit subtraction in this concise lesson that has related vocabulary and strategies for solving subtraction problems. This lesson includes lots of examples and links for two interactive subtraction...
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Activity
NumberNut

Number Nut: Subtracting More Than Two Values

For Students 3rd - 5th Standards
Get the facts on how to subtract more than two values in this short subtraction lesson. This lesson offers step-by-step examples, suggested strategies and shortcuts, and links to related interactive games. Both games are fast-paced and...
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Unknown Type
Paul Dawkins

Paul's Online Notes: Trig Cheat Sheet [Pdf]

For Students 9th - 10th Standards
A trigonometry "cheat sheet" to use as a reference when completing trigonometry homework. Lists basic facts, properties, identities, formulas, and inverse trigonometric functions.
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Activity
University of Cambridge

University of Cambridge: Nrich: Angle A

For Students 3rd - 8th Standards
Sharpen your logic and angle recognition skills by working on this interactive challenge. Solution available.
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Interactive
Shodor Education Foundation

Shodor Interactivate: Arithmetic Four

For Students K - 1st Standards
You can challenge a friend to play this game to practice your arithmetic skills. Be ready because any kind of problem can pop up. You can adjust the problems to make them harder and also to give you less time.
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Website
Other

Allmath.com: Multiplication Table

For Students 3rd - 8th Standards
This multiplication table is a 15 x 15 grid. It can be used as a student resource online or as a printout.
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Online Course
Other

Tufts University: Early Algebra, Early Arithmetic

For Teachers 3rd - 8th
This online resource is from the Tufts University offers lesson plans, worksheets, and ideas about using algebra with elementary grade levels.
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Activity
Cool Math

Coolmath: Coolmath4kids: Printable Flash Cards

For Students K - 1st
Find here flashcards for addition, subtraction, multiplication, and division for printing off and coloring.
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Interactive
Other

Scweb4free.com: Addition Balloons

For Students Pre-K - 1st Standards
Find the sum of the two red ballons among the green ballons in this concise addition game. Practice basic facts through 15. Answers checked instantaneously.
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Activity
University of Cambridge

University of Cambridge: Nrich: Counting Cards

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and factor skills while working on this challenge. The solution is available to double check your solution.
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Activity
University of Cambridge

University of Cambridge: Nrich: Grouping Goodies

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and factor skills while working on this challenge. The solution is available to double check your solution.
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Activity
University of Cambridge

University of Cambridge: Nrich: What's Left?

For Students 3rd - 5th
On this one page website sharpen your logic and factor recognition skills while working on this challenge. The solution is available to double check your solution.
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Activity
University of Cambridge

University of Cambridge: Nrich: Scoring With Dice

For Students 3rd - 8th Standards
On this one page website sharpen your logic, multiplication, and multiples skills while working on this challenge. The solution is available to double check your solution.
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Unknown Type
Varsity Tutors

Varsity Tutors: Aplusmath: Addition Worksheets

For Students 1st - 8th Standards
Create customized addition worksheets. Choose from basic facts to four-digit by four-digit questions. The size of problem set can be selected, as well as whether the format will be vertical or horizontal. An answer key can also be...
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Interactive
Quia

Quia: Addition Concentration Sums 10 to 18

For Students K - 1st Standards
This website for young children gives them practice adding sums from 10 to 18 in a concentration game type format.
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Interactive
Quia

Quia: Addition Matching Sums 0 to 9

For Students K - 1st Standards
This website for young children gives them practice adding sums from 0 to 9 in a matching type format.
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Interactive
Quia

Quia: Addition Concentration Sums 0 to 9

For Students K - 1st Standards
This website for young children gives them practice adding sums from 0 to 9 in a concentration game type format.
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Activity
Quia

Quia: Addition Matching Sums 10 to 18

For Students 3rd - 5th
This website for young children gives them practice adding sums from 10 to 18 in a matching type format.

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