Wednesday, March 7, 2012

Calling all Mad Scientist!

Tonight at Rebecca's kid's school, there was a science night. Parents set up all different kinds of science projects for the kids around the gym. All the projects had to do with food - we love that! It was so exciting to see so many kids so excited about science! Some of the projects were tried and true classics and some were new to us parents. They made ice cream in a bag, showed how celery drinks with colored water, tested which foods had starch with iodine. They got to use real microscopes. Each project had a project sheet that explained about the project, the procedure, and a chart to record the data. The kids loved all the experiments, but their favorite was one called "barfing bags.". (You can guess why!)

We thought we would share this experiment with you! It's not actually about the digestive system, but rather about yeast and the fermentation process.

What you need:
-Two ziplock baggies
-1 teaspoon of yeast
- 1/4 cup low sugar cereal mixed with 1/4 cup warm water
- 1/4 cup High sugar cereal mixed with 1/4 cup warm water

Let the cereal and water get all mushy and squishy.

1. Label one bag high and one low
2. Place 1/2 tsp. yeast into each bag.
3. Put the high sugar mixture in the bag labeled high and the low sugar mixture in the bag marked low.
4. Zip the bags closed, making sure to press out all the air.
5. Squish the bags a little to mix in the yeast.
6. Set on a plate and observe what happens to both bags.
7. Record how long it takes for each bag to fill up with carbon dioxide.
8. If you are really daring, you can see how long it takes for your bag to barf!

Have fun experimenting! Get excited about science!
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1 comment:

  1. We just love science experiments! This is so cool!