Grab Years K - 2 Wendy Batchelor, Ruth Court, Dione Parker, Julie Jacobs, Kingston Primary School

Procedure

1. Remove all the plugs from a red board and put them in the bag.
2. The player thinks of a number then reaches in and tries to grab that many in one handful.
3. Count the plugs, compare with the target then replace the plugs and try again.

Extensions

1. Use two or more boards and allow more than one dip into the bag.
2. When confidence has developed with red plugs, repeat the activity with the yellow/blue plugs.
3. Students estimate the number they can grab with one hand, count the result and find the difference between the actual and the estimate. Record the difference (perhaps as a graph). Repeat the experiment and look for trends in the accuracy of estimates.