Which part will work the best and why

I think the part that worked the best is the pipe cleaners that we used for the middle of our chain. Just because they were stronger and a reliable material to use for our chain.

2) which part do you think might be a problem and why

I think the part that might have been a problem is the straws just because they did not hold a lot of the weight of the bottles. Also, it was kind of hard making them link together and the tape we used to bind theme together also didn’t really work
3) Why did you not use all of your materials

We did not use all of your materials just because we did not think that some of the materials were a good fit for this chain like paper or index cards. So that’s why we only took the stronger more reliable materials such as the ones we used for the middle of our chain to make it stronger and more efficient.