The students may want to use markers to put faces on their eggshells to make eggheads. Store them in the egg cartons. Have the students fill their eggshell with the soil they brought. Plant rye grass seed, or any fast growing seed, in the eggshell planter. Put the egg cartons on the windowsill, and keep the soil moist.
Every day observe, compare, and record how the plants are growing.
At the end of two weeks, compare the plants, and discuss what happened. Have the students discuss how they might improve their soil so they can grow more products. In fact, the eggshell is a soil nutrient. To transplant the grass into the ground, dig a small hole, crush the shell, and plant the grass. Room 152 Lincoln, NE 68508-3866.