MATERIALS: 
1) 3 cardboard Mandarin orange boxes. 
-----One larger  29 cm X 17.5 cm X 19 cm
-----Two smaller 24.5 cm X 16.5 cm X 17 cm

2)Tinfoil

3)Heatproof tinfoil tape

4)Rectangular, 1cm thick steel plate, to fit on botttom inside of smaller box.

5)Black heat-proof paint

6)Cardboard

7)Clear oven baking bag

8)Heat lamp to substitute for the sun.
------250 watt bulb in appropriate holder

9)Heat proof thermometer

10)Knife to cut holes in box lids
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