awhile back we started using algebra tiles to model algebraic expressions. we have 3 different, one that represents one (a small square), one that represents x with an exponent of two( a big square), and one that is simply x (a rectangle). we can make them ether positive or negative by flipping them over, because one side is colored and the other side is not. to use these tiles we put them out in a specific order to represent an equation. for example, if you put down 3 negative xs, that would represent -3x. then if you added other tiles like that 1’s you could make an equation like -3x+4. using algebra tiles makes your equation easier to do because you can see all the different parts and you can group them all together easily. when subtracting one group of algebra tiles from another you simply flip them over and then take out the pairs that cancel each other out. when multiplying you make  a graph (as shown below) then put the squares you want to multiply one ether sides of the graph the draw a strait line in between each tile and look in the middle of the graph. at last you see what shape would sit in the hole and you have your answer. for dividing it is the same but you start with the area in the middle of the graph divided by one of the sides and the one side remaining is your answer