To help students visualize abstract concepts Introduce a new topic; students then can discover the algebra rules instead of being told by the teacher.

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Presentation transcript:

To help students visualize abstract concepts Introduce a new topic; students then can discover the algebra rules instead of being told by the teacher Reinforce a topic for a struggling student

Positive TilesNegative Tiles x x X x x X X² 11 X

Addition and Subtractions of Integers Distributive Property Combining Like Terms Solving Equations Multiplying Binominals Factoring Polynomials

3 + ( -5 ) = ? Additions means Combine Use the zero property to cancel/take away a pair of blue and red tiles Left with 2 -1 tiles Answer =

5 – (-2) = ? Start with 5 take away Answer = Now you can take away 2 -1 tiles Add a zero pair in order to be able to take away tiles

3 (2x + 1) is equivalent to 6x (2x + 1) {using repeated addition) Rearrange the tiles XX 1 XX XX 1 1 X X X X X X

(x² - 2x -3) – (2x² + x – 2) = ? X² X X Subtraction would be represented by adding the opposite of each term in parenthesis X² X 1 1 Cross out all zero pairs, what you have left over is your answer Answer = -x² – 3x – 1 +

2x -2 = 4 X X 11 = 1111

Add two tiles to the left to make a zero pair * To keep scale balanced - do the same to both sides * X X 11 =

2x -2 = 4 Arrange the tiles into groups Answer: X = X = X

(x + 3) (x + 2) X111 1 X 1 L W

X111 1 X 1 X² XXX X X Answer = x² + 5x + 6 Fill in the space so that lines between tiles are continuous

2x² + 5x + 3 X² X X XX X111 First fill in the x² tiles and 1 tiles Then arrange the x tiles to match

2x² + 5x + 3 X² X X XX X XX X x + 1 2x + 3 Answer = (2x +3) ( x + 1)

Teaching the rules of Algebra Tiles Multiplying a Polynomial by a Binomial More difficult using negative number for: Distributing Factoring Multiplying two binomials (It is possible but students might struggle)

Visualizing an abstract concept Students generating rules Practice with basic problems then have students find patterns to then apply to more challenging problems Another tool in the tool box