Buoyancy relates to how well something will float in a liquid.
Plastic bottle rubber band boat.
This is your paddle.
Connect the rubber bands to the skewer with hot glue and then wind with a paper clip.
Slide your curved taped plastic carton pieces or your taped spoons or your joined foam pieces between the sides of the rubber band.
The kids had so much fun when we did the build a boat that floats challenge with our homeschool group that i knew they d love engineering these plastic bottle paddle boats.
Put the skewer in through the top of the bottle leaving the rubber bands sticking out just a little.
At this point you can tape the paddle to the rubber band.
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Put the skewer through the hole in the back of the bottle.
Rubber band boat stem activity.
You could easily experiment with your paddle boat in a bathtub or water table inside your house.
After we learned how to build a paddle boat we had fun testing it out in an inflatable pool in our backyard.
Because the bottle is filled with air it will float on top of water even with all the other parts attached to it.
The plastic bottle makes a nice body of our boat because it s buoyant.
This rubber band boat stem activity was a huge hit and we couldn t wait to share it with you.
Secure them to the the bottle by screwing on the cap as seen in the photos.