Sesory walk made out of plastic breadboards and mountains of hot glue. The boards are covered with fine sandpaper, scrubbing sponges, some kind of foamy material used to keep rugs from slipping, a mop and flat glass stones.
"On the white paper (plain popcorn) I wrote numbers, on the yellow (buttered popcorn) I wrote math symbols (+ – x ). Students can then choose 2 pieces of white popcorn and 1 piece of yellow. They write the equation and answer in their books.