Easy and Useful Solar Oven

Make your own fun and easy solar oven. Great for making smores, reheating pizza, and making nachos. For the Science Teacher / Student -How can you improve on this design to make it more efficient but still keep the cost down? -Where is the transfer of energy that is taking place? -What is the purpose of the reflective foil, the clear plastic, the black paper? -At any point is convection, radiation, conduction taking place? When, where, and how? -Design a better adjuster for the flap -Design a more insulated box