1. Research:
For my teams sail design we decided we wanted to base it on what sails actually look like so when we researched different sails we saw that they were kind of triangular shaped so we tried making a triangular shaped sail.
2. Design:
Our design was based on what actual sails look like because we thought if they work with real sailboats they might work with our sail car things. We also wanted to make sure the sail was sturdy so we added cardboard to the paper so that it would stay up. When we decorated our sail we wanted it to be colourful and goofy so we added our team name to the front which is SAC which stands for Stevie-lee, Alayna, and Chloe.
3. Build:
Our build process was kind of easy because it was simple and didn't take long. We had a large piece of newsprint and we folded it into a triangle and sellotaped it together. We then put a hole at the top and the bottom of the triangle so we could sellotape it to the metal rod which was attached to the car thing. We then rolled up cardboard so that it was bendy and tapped it to the back of the paper so that it could be more sturdy. Lastly, we decorated the paper with lots of different colours.
4. Test:
The first test we did was the speed and distance test. The results of our first test were 20.5cm
The first distance test we did the results were 1.8m
Our boat got around 3/4th place out of the 7 teams.
5. Redesign/Making Changes:
We decided to add more cardboard to the back of the sail so that it was more sturdy and wouldn't fall over if the wind would push it. We added cardboard along the rod aswell.
6. Retest:
Our second test was just distance and the results were the exact same 1.8m
Evaluate:
Adding more cardboard to the back of the sail didn't actually help at all. They both went the exact same distance both time so next time I think we should try using a different shape of the sail so that it can go further and faster.
7. Photos:
 |
| Original design |
 |
| Second design adding more cardboard to the back so it was more sturdy. |
Great work Alayna! Next time it would be good to see an explanation of why you thought your observations happened (as part of your evaluation).
ReplyDelete