Insulators are things that stop heat from travelling. The materials that kept stuff warm was the paper cup,tin,and paper.
The best insulator for keeping things warm was the polystyrene cup.
The best insulator for cold was the plastic cup.
The materials were tested with thermometer. The materials that stopped heat from escaping was the glass and polystyrene.
The insulator best for hot and cold is polystyrene because it has a lower number on both of the experiment.
Here is the results of the hot and cold experiment.
L.I To learn and practice experimental methods
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