Materials:
Cardboard(from the dumpster), alu-foil, glue, tape, black paint, newspaper
Design aim:
Find out if a shape more like a parabola would increase the heat
Outcome:
Reaches a higher temp. and cooks food quicker than the other versions but looses temp emediatly when
a cloud hides the sun. The others keep the temp high for a longer period and is therefor not as sensitive to clouds.