How Many Berries Did I Eat?

Featuring a Task from Math LandingFor Grades 3 - 12

This website contains classroom collections that,"are ideal for teachers to use in helping students understand concepts. Each resource set includes an outstanding selection of interactives, games, videos and learning tools."

The task below is just a sample from a very extensive website.

Primary Grades:

How Many Berries Did I Eat?

I have a blueberry bush with 9 blueberries and a raspberry bush with 7 raspberries. I ate some blueberries and some raspberries. Now there are 4 blueberries and 4 raspberries on my bushes. Did I eat more blueberries or more raspberries? How do you know? Check your thinking by using pictures or numbers to show how many blueberries I ate and how many raspberries I ate.

Original source: http://mathforum.org/pow/samples/packet4451.pdf