Straw rafts

In inquiry we are learning about the design process. The design  process is where you plan, design and test a product or theory. Sometimes when you test it, it doesn't work and you have to keep trying and try and see how you can make it better. Mrs Mcg gave us a challenge. We had to plan, design and build a straw raft to float a 40g of weight on it. We could only use 20 straws and 1 strip of tape my raft failed 1 time because I could only test it 1 because I didn't have enough time to make it better and test it. We did some research on how rafts float  I found it hard to find it but then I found something I found they float because if the raft is less weight then the water.