Three separate, aerated compartments enable kids to view the entire decomposition process clearly and make side-by-side comparisons between different materials.

Included thermo-meters demonstrate temperature changes during decomposition process. Includes 30cmW x 20cmH x 10cmD clear plastic box with faux grass top, 3 clear-view compartments with aeration holes and magnification spots, thermometers as well as Teacher's Guide with usage ideas, time lines, and science fair applications.