Monday, January 19, 2015
Magnetic Boats & Sleds - Using the Design Process
First we made a boat out of foil and Popsicle sticks. We attached paperclips to attract to the magnet. We found out that our boat would not float. We changed our design to look like a raft. We added straws underneath to make it float. Our boat held ten marbles and the magnet pulled it around the bin of water.
Ian & Sam
First we built the bottom out of Popsicle sticks and straws. The first time it didn't hold the marbles because they rolled off. We had to build sides to hold the marbles. We also put a layer of Popsicle sticks on the bottom and built a tower of paperclips to be attracted by the magnet. Our boat worked!
Alex & Tate
First we tried to attach a magnet with plasticine but it was too heavy and it tipped the boat. We tried gluing more Popsicle sticks to make a flatter base. It still did not float but it held ten marbles. We think it doesn't float because it needs a bigger base and it's too heavy.
Richclyde & Tristan
by Haylee & Emilie
We made a boat out of Styrofoam. We decorated it and added a magnet strip. We put it into the water and it tipped over. Our second time we added foil, lots of paperclips, and toothpicks to hold it together. It tipped over again. We removed all the extra things and details and it floated and held ten marbles. We held the magnet and the boat floated towards it. We learned that the heavier we made the boat the more it tipped. We shouldn't add any more weight.
by Ginger & Molly