For this FACTivity, you will be growing bean seeds and answering the question: What other benefits does animal scat offer to trees and plants? Four 4-inch plant pots with saucers A bucket of soil dug from your school yard—be sure to break up any clumps and remove any grass or plants, including plant roots and rocks or pebbles An extra bucket for mixing soil A small bag of manure (may be purchased at a garden shop) or a small bag of worm castings (may be purchased at a garden shop) A bag of bean Topics: Agriculture, Bean Seeds, Experiment, Gardening, Hands-on, Indoor Activity, Manure, Outdoor Activity.