| area | the number of square units needed to cover a space |
| difference | the answer to a subtraction problem |
| event | something that happens |
| milliliter | a very small metric unit to measure capacity (what a dropper holds) |
| open figure | a shape that has an opening |
| perimeter | the distance around the outside of a shape |
| symmetry | a shape can be folded along a line so that the two parts match exactly |
| tessellation | when a shape is repeated over and over to cover a surface with no spaces in between |
Drag corresponding items onto each other to make them disappear.
Start Game