Homeschool Solar Oven - Cooking S'Mores Part 2

In this project, we lined a cardboard box with black paper, covered the lid with tinfoil, placed our biscuits in with a square of chocolate and a marshmallow, another biscuit 'lid' and then cling film over the top. We propped the lid open and set it in the sun. The idea is that the sun will hit the tinfoil lid and bounce the heat into the box where it will be trapped by the film and thus melt the fillings more quickly then if left in the sun alone.
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