Today we have another science-based free autism resource! You'll need a file folder, lamination, and velcro. Put the cover on the front of the folder then laminate. Laminate and cut the liquids and solid, and add velcro. Then add velcro to the inside and the front of the folder. To use, put the liquids and solids you are testing on the back of the file folder - your student will sort them into the correct category and know they are done when the back page is empty!