Learn about acids, bases, and gas production with this Week 16 supply set.

You'll get five of the following for your class so students can work in pairs:

• 6-oz plastic bottle

• Effervescent cleaning tablets

• Balloon

You can also add on extra effervescent cleaning tabs.

You'll find instructions for this activity in our Week 16 Lesson Plan (available in October).

Our lessons for this activity also require baking soda and vinegar, which you will supply.