First up...slime! I have never tried slime, but I found these two great variations...
|via sunny skyz|
|via Kelsey Smith|
Finally, an idea for assessment. In this particular example, students are to stack the cups according to size of the items listed on each cup. This same idea could be use to demonstrate the order of operations, the order of planets, or any other sequencing activity like ordering trig functions (sin pi/6, cos pi/4, etc). I am sure if I made it a race, the kids would love it even more. What about you? What are you pinning or saving as you look forward to next year?