You can consider a 1x4 plate to represent one whole. That means a 1x1 plate represents one fourth. What does a 1x2 plate represent? What does a 1x3 plate represent?

Using a small collection of these plates, complete the following calculations:

1/4 + 1/4 =
1/2 + 1/2 =
2/4 + 2/4 =
1/2 + 1/4 =
1/4 + 3/4 =
1/2 + 3/4 =
3/4 + 3/4 =