Are you teaching matter? Solid, Liquid and gas...
Here are pages for your students to sort by different physical properties. Ex...solid, liquid, gas ... wood, paper, metal ... by color (using color Goldfish crackers or Fruit Loops Cereal) ... hot, cold
You also get pages for changing physical properties...such as changing: ice, Play-Doh, pipe cleaners, gum and paper.
There is also a page for mixing two colors in order to create a new color to go with the story, Mouse Paint.
Check out my store for posters with poems for Solid, Liquid and Gas as well as a science reader on Solid, Liquid and Gas.