Our first try fails, it lost 15 celsius, but on second try we used one more layer of aluminium foil. Then we lost 10 celsius, it was successful. Then we add neoprene. When we had the third time, our heat lost 7 celsius. Our hardest thing to do is to decide the materials that we will use it. Sometimes we have different ideas like when I said mylar my partner think we need to use bubble wrap. We used these items because these materials can all keep the transfer of heat or cool. They are an insulator and it is a poor conductor. the main material that we use is mylar. I think the most keep warm material is mylar. The quality of this cup is not bad, there is too thick.  I want to change the lid because there are too many pieces of cotton I will make a fence surrounding the cotton and aluminum foil.

I think the ice is melting and the penguins loses their habitats because of human beings.

Human beings uses too many electricity and too much transportation that has exhaust fumes. They do no use bicycle, they usually use cars and motorcycle even though the distance to our destination is close. And the world is too developed. Exhaust fumes can cause global warming more harder. Many country wants to block global warming, so many cars invented electronic cars. Lets save the penguins. Their habitats that is South pole is meting