Did you know you can blow up a balloon with common household ingredients? We chose two different methods to make the necessary carbon dioxide: yeast, and baking soda and vinegar (an old standby favorite).
This simple at home science experiment is a great boredom buster when you and the kids are stuck inside. When you are done, be sure to visit my giant list of Indoor Activities for Kids for more ideas.
MORE: This project would make a great addition to our DIY summer science camp!
How to blow up a balloon with yeast
Here are our supplies. Note that the towel is absolutely essential!
Put a spoonful or two of sugar in a bottle. A funnel is very helpful, though not strictly necessary.
How to blow up a balloon with Baking Soda and Vinegar
First, use the funnel to fill balloon with baking soda.
This is a very satisfying activity for a 4 year old who loves action and reaction. It also provides further free play with the materials, producing much bubbling, oozing and fizzing, along with one very wet towel.
Science Project Books we like (affiliate links):
The Book of Totally Irresponsible Science: 64 Daring Experiments for Young Scientists