2. Black paper Aluminium Foil Staples Cling wrap Cardboard Metal box Heatproof mat Scissors

3. We use the black paper to wrap the metal box surface and for the inner facing, we stick the aluminium foil. We make a lid by black paper. In the middle part, we cut a hole and cover it by cling wrap. Inside the outer metal box, we also make an inner box for putting sausage, it is also in the same design, surface is black and then inner facing with aluminium foil. We use alumimiun foils covering two cardboards, as the shelter.

5. Principle: black Paper -it can absorb more heat from radiation metal box -easier to conduct heat as it is a good heat conductor Aluminum foil -reflect light to the metal box -trap heat inside the solar cooker to maintain a higher temperature

6. Continue: Air gap -avoid heat loss as no conduction can occur between the box to surrounding Heat- proof mat with holes -prevent heat loss to the ground and let hot air to rise through the holes Cling wrap -Let heat transfer to the solar cooker and trap heat inside the solar cooker

7. How the light reflect?

9. Initial temperature---25 ◦ C Final temperature---50 ◦ C-60 ◦ C