Solar-powered Biscuits - Family baking for children

11-14 year olds | one hour

Harness the power of solar energy for this non-traditional twist on campfire treats.

What You'll Need

  • old pizza box
  • pencil
  • ruler
  • black paper
  • scissors
  • foil
  • glue
  • tape
  • plastic sheets
  • chocolate biscuit supplies
  • stick

Instructions

  1. Set the pizza box right side up, with the top facing you. Draw a square on the top of the box with your ruler and pencil. The square should be only 2-3 centimetres smaller than the box itself.
  2. Now, cut out this square on three sides, leaving the side closest to the hinge of the box uncut. This creates a flap. Now you have a two-pieced top — the outline of the top and the new flap.
  3. Glue a piece of foil to the bottom side of the flap.
  4. Glue a piece of foil to the bottom inside of the box. Glue a piece of black paper on top of this.
  5. Open the flap and top outline. On the underside of the top outline piece, tightly tape a piece of plastic. Now your top outline is a clear cover.
  6. Place this solar oven outside on a sunny day.
  7. Put your biscuits, chocolate and/or marshmallows on the foil and black paper covered bottom inside of the box.
  8. Close the clear-plastic top over the biscuits. Make sure it closes snugly.
  9. Angle the flap so that a lot of light reflects into the box. Prop at that angle with a stick and rock.
  10. Check on your biscuits every 15-20 minutes to see if the light has shifted. You may have to move the flap occasionally.
  11. The biscuits should be done in an hour! Enjoy!

Tags: recipes, science


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