In Mrs. Ramirez’s 5^th grade science class, we were exploring thermal energy. We built “koozies” out of materials such as Styrofoam, aluminum foil, cotton, and air. We poured hot water in the small cup and measured the temperature in the beginning, after 5 minutes, and after 10 minutes. We learned that the “koozie” with the highest temperature in the end was the best insulator of heat.    –Syon A.