According to the Author, in Chapter 3, Why Does Addition

Multiple Choice

According to the author, in Chapter 3, why does addition using algebra tiles make sense to the student?

A) The tiles are the same shape and size.
B) The tiles are the same color and texture.
C) The tiles are the same thickness and shape.
D) The tiles are the same shape and color.
E) The tiles are the same size and thickness.