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Expression Exchange

Build coin expressions, then exchange them for variable expressions. Simplify and evaluate expressions until you are ready to test your understanding of equivalent expressions in the game!

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Equality Explorer: Two Variables

Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with integers and variables on a balance. Find multiple ways to balance x and y to build a system of equa ...

Equality Explorer: Basics

Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance. Find all the ways to balance cats and dogs or apples and oranges.

Objetivos de ...

Equality Explorer

Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance. Discover the rules for keeping it balanced. Collect stars by playing the game!

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X the Unknow? Basic

Find out how X-rays were discovered and how the use of X-rays revolutionized science and medicine.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be log ...

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