Decomposition
THEME: The Living Soil–The Living Plant: We are all Interconnected and Related
STRAND: Science of Soil Fertility
GRADE LEVEL: K-2
Key Concepts
Understand that decomposition includes organic materials, air, water, organisms, and time.
Lesson
Build, turn, and sift a compost pile and observe decomposition.
K2.2.7
Conduct a visual investigation of fungi, bacteria, and invertebrates (FBI) in compost using our eyes and a magnifying glass. Tell the story of the compost pile as the ultimate resort getaway (ideal habitat) for the FBI, a place with all their favorite food, enough air, water, etc.
K2.2.21
FBI & Decomposition songs
K2.2.4
Observe decomposition of mulch on the soil over time (compost in place).
Experiment with the decomposition of organic and inorganic materials. Bury and dig up to observe over time. Rank them.
Activity
Students create a visual report of decomposition of organic & inorganic materials over time.
Can utilize digital photos to create a slideshow or Powerpoint for presentation.