This is our official kickoff to girls STEM club for the 2014-2015 school year. I had an amazing turnout this year and have maxed out with 10 girls in the club. Hurray! I still remember back in the day when we started the club with only 4 girls. I am thrilled to see more girls becoming interested in science, technology, engineering, and math! I hope this love continues throughout their lives.
Today we started the lesson with a science experiment. I sat them in a circle and we all looked at these material.
I took some rice and placed it on top of the bowl with plastic wrap on top. They made predictions of what would happen to the rice if I banged the drum with a spoon. Most thought it would move because of air from the drum. Some even thought it was the vibration of the drum that would make the rice move. Sure enough, it worked. The vibration from the drum caused the rice to move. We then tried it with a bucket, made predictions, and watched if the rice would move. This time the predictions were split. Half thought the vibration would make the rice move and the other half thought the rice would stay put because the bucket would not produce enough vibration. When I banged the bucket. The rice did not move! Awesome job, girls! We are observing vibration.
Our design task for the 2nd part of this class was to design something that could show the movement of vibration. What better way then through art! The girls were given different cups or containers. They were given pencils, colored pencils, crayons and markers. Then they were given something that would actually vibrate – a motor. They have to design a “vibration bot” to show the movement of the vibration.
The girls were thrilled with this task and could not wait to get their hands on the materials and motors. They instantly went to work testing the containers and learning how importAnt it is to make sure the markers were even. They hand to make sure the vibration bot they created could stand on its own. They also figured out that the motor had to be placed in a way so that the end piece could spin around.
They tried their plan, and if they had time, they tried again with a new idea. Some attempts failed and some were very successful. They also learned that the wires that are attached to the motors were very fragile.
Next week we will continue to study vibration!