Homemade Soil

Yesterday, we made homemade soil. We added pebbles, gravel, sand and silt. We also found out what humus was. Humas is made up of decayed plants and animals. Humus is in soil too! Today we separated our soil with screens, but we were left with a container that had a sand mixture in it. We put it into a vial, added water and we were able to separate it into different layers containing the humus, silt and sand. It was so cool!