Saturday, September 22, 2012

Watery Coins Experiment

Good evening!

I hope everyone is having a great weekend. I am hoping to catch up on some grading that I have to get done ~ I am falling sooo behind! My blogging habit probably doesn't help that too much, but it's just way more enticing than grading.

This week, I did a little prediction experiment with my sixth graders. We are going through the Scientific Process and this was an excellent experiment about making predictions and also reviewing different variables.  The science lab was occupado, but no worries, we had a floor so we still had room to be scientists!

P.S. My students look slightly creepy with blacked out faces!


The students make predictions as to how many water drops can fit on each coin before hand. The materials they will need are: a vessel for water, paper towels, droppers, a penny, nickel, dime, and quarter. They put drops of water on each coin, counting the drops, until it overflows. The students fill out the form as they go and then average their data at the end.  Click the picture to download the PDF.
I hope you can use this experiment in your classroom! The kids had so much fun doing this and they were all very surprised how off their predictions were. Have a great weekend!

1 comment:

  1. Question:
    After asking my engineer husband, and without having to look it up, what would the Responding Variable and controlled variable be? I know that the manipulated variable is one that you can change-the coins. I am thinking the controlled variable would be the water droplets, right?