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Sick Day (With Yeast!)

What do you do while stuck at home with a sick three-year-old? Bake bread! Well, okay, I did the baking, but Z requested a science experiment. Who am I to pass that by?

Because he so loved the baking soda and vinegar stuff, I gave Z some yeast, water, sugar, a funnel, cups, and balloons. First, we took a look at what yeast does with cold, warm, and hot water. IMG_0833

Then, he (mostly carefully) scooped some yeast and sugar into balloons, and added different temperatures of water to each. Check this out! The green balloon is cold, pink is warm, red is hot. In Z’s words, pink wins! Yeast must like warm water. (The blue balloon is a whole bunch of everything.)

This was more interesting to me. About two hours later:
Green and pink are now basically the same size. The red (hot water) balloon must have killed a lot of the yeast.


My son (Z, who is 3 years old), got a little flashlight as a birthday party favor. “Look, Mama! Little!”

“Cool! Can you make the light big?”

“Neat! Can you make it little again?” Z repeated this a few times before getting bored. The next day, he asked for the flashlight again. I suggested something new. “Can you make a small light on the wall?”

“Yup, that works. Can you make a big light on the ceiling?” He was pretty good about appeasing me. I tried to get him to say what exactly he was doing along with his actions, but wasn’t successful. Producing a small light on the ceiling just made him giggle.

Doing science doesn’t have to be complicated, with the whole scientific method and so on. Try something, and try something else. And then try a variation or two. Adam Savage says:

Guess I’ll do the writing for Z for a little while.