We covered our plastic bottle with materials and then colored in a penguin and put it on with string. We filled them with water and tested their temperature after 5 minutes to see if our penguin kept the water the warmest.

Timora - I put tin foil on the bottom to keep the water hot.

Teddy - I put on cotton balls everywhere and colored in my penguin. I was happy with the penguin.

Jana - I covered my penguin in tin foil, pink wool, tissue, cotton balls, and angora.

Ella - My penguin it measured 55ㅇC (from 73ㅇC) after 5 minutes. I liked my penguin.

Marik - I put on tissue, cotton balls and tin foil because I thought they would keep it warm.

Bailey F-D - I put tissue, blue wool and cotton balls on because it keeps it the warmest.

Tino - I pasted a cotton ball on the top so it would look better.

Samachow - I only covered my penguin with cotton balls because I thought it would keep it the warmest.

Rica - My penguin had tissue, blue and pink wool, cotton balls and tin foil so it is excellent to keep the begin hotter.

James - My penguin temperature was 56ㅇC from 73ㅇC which I thought was excellent. It was covered in foil, angora and cotton balls

Bailey S - My penguin was covered in tin foil only. I thought this was going to keep hot because in another experiment tin foil kept the cup the hottest.