I LOVE these for middle school bell ringers! Students LOVE the sorting cards because they don't have to WRITE anything, simply move them around on their desk. I love them for formative assessment. Use everyday for one week and the concept will be mastered. Laminate for years of use. Store in sandwich bags. 27 sorting cards. Student cheat sheet included. (Use the cheat sheet the first day or two for sorting, then take it away.) Enjoy!
These also make a great review station!
Crazy Science Lady