a thermometer (calibrated in degrees Celsius) for measuring the outside air temperature near the cooker
a container to use as a solar cooker
materials for lining and shaping the inside surfaces of the cooker and insulating it
a horizontal surface in direct sunshine to place the cooker during testing and data collection
a watch to measure the length of time it takes to melt the chocolate chip
refrigerated milk chocolate chips (standard size)
toothpicks to hold the chocolate chips
material to use as a stand for the toothpick and chocolate chip
a place to keep the refrigerated chocolate chips cool (examples, a cooler and cool-pack, a container of ice cubes)
a watch to measure the length of time it takes to melt the chocolate chip
paper towels or napkins for cleaning up
