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Math Vocabulary Cards by The Math Learning Center

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Math Vocabulary Cards helps students deepen their conceptual understanding of key terms in mathematics.

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Geoboard is a tool for mathematical exploration. Stretch bands around the pegs to form line segments and polygons, and make discoveries about perimeter, area, angles, congruence, fractions, and more.

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Logic and Problem Solving

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Build patterns, create and solve critical thinking problems, and model various math concepts with pattern blocks at MathPlayground.com!

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Mental Math - practice adding numbers
Problem Solving - construct the best number chains

Common Core Connection for Grades 1 and 2

Fluently add and subtract within 20 using mental strategies.
By the end of 2nd grade, know from memory all sums of two one-digit numbers.

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Play Addition Blocks at Math Playground.com! Combine blocks that add to the target sum.

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Mental Math - visualize adding and subtracting 10s

Common Core Connections - Grades K to 2

Add and subtract with 100.
Count to 120, starting at any number less than 120.
Given a two-digit number, mentally find 10 more or 10 less than the number.
Subtract multiples of 10.

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Interactive Hundreds Chart | Math Playground

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Interactive Hundreds Chart at Math Playground.com! Explore addition, subtraction, patterns, and more.

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Rekenrek | Free Virtual Manipulatives | Toy Theater

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Similar to a ten frame, the virtual rekenrek is a fun tool for building number sense, modeling operations, and improving motivation in math.

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Mental Math - fast recall of addition facts
Problem Solving - match mathematical expressions with the correct value

Common Core Connection for Grades 1 and 2

Relate counting to addition.
Apply properties of operations as strategies to add.
Add within 20.

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Play Jet Ski Addition at Math Playground! Use your addition skills to win the water race.

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Mental Math - visualize adding and subtracting 10s

Common Core Connections - Grades K to 2

Add and subtract with 100.
Count to 120, starting at any number less than 120.
Given a two-digit number, mentally find 10 more or 10 less than the number.
Subtract multiples of 10.

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Hundreds Chart Patterns | Math Playground

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Hundreds Chart Patterns at Math Playground.com! Explore addition, subtraction, patterns, and more.