Step 1 add balanced set step 2 add balanced set step 3 remove zeros.
Expression mat legal moves.
Write an expression for each side of the expression comparison mat.
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Build the expression comparison mat shown here.
1 removing the same number of opposite tiles in the same region.
For example 3x 2y 2x 6 3x 2x 2y 6 3 2 x 2y 6 x 2y 6.
Use legal moves to determine which mat is greater if possible.
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Legal simplification moves view the process of balancing using algebra tiles.
Expression for right side.
To simplify an algebraic expression that consists of both like and unlike terms it might be helpful to first move the like terms together.
Tiles may be removed from or moved on an expression mat in one of three ways.
Use algebra tiles to describe perimeter.
Write an expression representing each side of the expression mat.
What remains is 2x on mat a and 4 on mat b.
Using an expression mat.
Simplify 3x 2a.
When moving the terms we must remember to move the or attached in front of them.
Simplify the expressions using the legal moves that you developed in lesson 2 1 5.
Such moves create opposites of the original tile so a shaded tile becomes un shaded and an un shaded tile becomes shaded.
Left right expression for left side.
And 3 removing an equal number of identical tiles from both the and regions.
Legal simplification moves algebra tiles.
2 flipping a tile from one region to another.
Students can replay these lessons any time any place on any connected device.
There are other possible arrangements.
Using an expression mat.
2 core connections courses 1 3 example 2 use legal moves so that all the x variables are on one side and all the unit tiles are on the other.