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 bottles

• Effervescent tablets

• Balloons

You can also add on extra effervescent tablets.

You'll find instructions for this activity in our Week 16 Lesson Plan.

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