Sort the stuff
Fill a tray with a block, a cup of water, a balloon, juice and a pencil. Kids sort each item into solid, liquid or gas and explain why. The balloon always sparks a great argument about whether air is matter!
Why it works: the U.S. Department of Education's guide for teaching elementary math recommends moving from hands-on objects to drawings to numbers.
Try it withIdentifying States of Matter WorksheetWorksheetsOpen it →























