This activity sheet engages students in using algebra tiles to discover the rules for subraction of integers.
First students develop the rules using the color tiles to help them visualize the operation of subtraction, which is defined as removing from the table. Zero pairs are incorporated in the lesson to make it possible to remove tiles.
Then students are asked to translate each problem into a mathematical expression so they can see how it is written algebraically. Students are asked to write their own rules based on the tiles and on the algebraic expressions.
Several practice problems are placed at the end for students to apply their rules.