This stand alone ACTIVITY#3 of 6 gives students practice with estimation-and is useful skill building using a triple beam balance as a measuring tool. It can be used as an exploration, simple lab, experiment, or activity and can be altered for your use. The teacher provides each group with a container of different items (not specific-use what you have available) on their table. Together, they will choose one or more items from the container to estimate (guess) which item(s) might be closest to