Here's how you do it:
- Fill a film canister (you know, the ones from the 80s) :) with water.
- Put 1/2 a tablet of Alka-Seltzer in the water.
- QUICKLY put the lid back on top of the canister.
- Step back.
- In about 5 seconds, the top will go FLYING off with a loud "pop"!!
If they are well-behaved through the experiment and keep safety first (meaning-- DONT point your canister at someone when it's about to pop), I surprise them with a 10 canister POP extravaganza! They LOVE LOVE LOVE it! :)
This one (and our Diet Coke and Mentos experiment) are their favs.
Science can be FUN! :)
What is your students' favorite classroom activity??