Put food in the circle and on one side of the balance and gram markers on the other until balance is achieved. Spread the food sample uniformly inside the circle. Repeat these steps for each of the other 3 samples of food. Place the food samples on the tray. Tape brown paper to the tray and put all trays in the same location.
Teacher sets up same experiment using vegetable oil.
Use the large brown piece of paper taped to a tray. Count 35 drops of vegetable oil, which equals 1 gram of fat, into the center of the brown paper. Place paper onto tray. Observe results for two days. Then examine results.