Solar Energy Sun S'Mores

Today I’m sharing an activity that is both educational and delicious! Solar energy is a topic that can be complex and intimidating especially for young children. But this fun workshop demonstrates how solar energy works in an easy and tangible way for your kids.

Sunlight is the most powerful source of energy on planet Earth. Without the sun, the earth would freeze and plants would not be able to grow or produce oxygen, which means there would be no life! Solar is the Latin word for “sun.” We can use solar power in two different ways: as a heat source, and as an energy source. Today we are going to create a solar power oven to make sun ‘smores!


  • Marshmallows

  • Graham Crackers

  • Hershey's Chocolate Bar

  • Aluminum Foil

  • Ruler

  • Cardboard Box

  • Glue Stick

  • Clear Plastic Wrap

  • Scissors

  • Scotch Tape


First, discuss with your children how solar energy systems do not produce air pollutants or carbon dioxide. Solar energy systems on buildings have very minimal affects on the environment.

Building the Oven

  • Cut a three-sided flap out of the top of the box, leaving at least a 1-inch border around the three sides.

  • Glue the aluminum foil on the bottom (inside) of the flap and throughout the inside of the box

  • Tape two layers of plastic wrap across the opening you cut in the lid—one layer on the top and one layer on the bottom side of the lid.

  • Set the oven in the direct sun, with the flap propped to reflect the light into the box. Preheat the oven for at least 30 minutes.

Cook your s’mores

  • Break graham crackers in half to make squares then sandwich a marshmellow and piece of chocolate bar in between two squares

  • Place the ‘smores in your oven

Cook your ‘smores until they are squishy and ready to eat (approx. 30 minutes) and then ENJOY!

Watch this Brain Pop video for more information on energy sources.

More information on this project.

More information on solar energy.

Tag @themodernteacher when you make your Sun ‘Smores!