Supplements to CTS: Section I- A visit to a sewage treatment plant looks at the role of decomposers and decomposition. Also, a scientist describes the cycling of matter in a forest ecosystem. Section IV- Dr. Tina Grotzer talks about research on ideas children have about decomposition, and the importance of looking at cause and effect in building accurate scientific understandings.
Essential Science for Teachers- Life Science. Annenberg/CPB Professional Development Videos at www.learner.org