(used with UCSMP Transition Mathematics, Lesson 3-2)
If you can't see the demo above, click here.
This interactive manipulative displays representations of mixed numbers and improper fractions. You can convert between various representations by dragging and dropping. For example, to convert a unit into parts simply drag a whole unit to the parts area. However, to convert parts back into a whole unit you need to select the appropriate number of parts. If the parts are each 1/2 of a whole, then you need to select them in multiples of two. To select multiple pieces at a time you can drag a selection rectangle or simply hold down the control key as you click.
You can enter your own fractions at the top or simply choose a random fraction.