How Many Are Hidden? Shifting Shapes
What do you notice? How many shapes do you see?
Now some shapes are hiding behind the big square.
How many are hidden? Use math words, numbers, or pictures to explain how you know.
Now we can see which shapes were hiding! What equations match the picture? How do you know?
6 − 2 = 4
6 = 3 + 3
4 + 2 = 6
5 + 1 = 6
How could you remove different shapes from the large triangle to make a smaller triangle?