13 card sort activities. Students physically sort cards into categories — predicting, debating, andself-correcting — and they do the thinking instead of you doing it for them. 500+ cards. Every major topic in your chemistry unit — one bundle, one purchase, years of use. Buy the bundle and save $15 versus purchasing each activity individually. That's 13 complete card sorts, most including a PowerPoint show for whole-class review, for less than the cost of three textbook supplements. Topics inclu