To get started, students can count the number of worms in the 1 lb. and place equal numbers in each bin. Set up multiple bins in your classroom. Each bin can be 'fed' different types of garbage. Labels like the fruit bin, the coffee grounds bin, the bread bin, and the combo bin will help track the varying diets of the decomposers. The castings can be tested using a soil testing kit to discover what nutrients are found in the castings.
Typical kits report on potassium, phosphorus, nitrogen, and pH levels.
Nutrients in the castings will vary with the type of garbage the veriform decomposers have been fed. Other information can be gathered about the relationship between amount of garbage and the amount of castings. Reproduction rates and weight gain can also be tracked and graphed. The top row shows 'zero', with no molecules at the right end of the row, successive rows provide representations of the numbers 1-10, with the appropriate numbers of molecules at the end of each row.