Ecosystems: Matter and Energy in Communities: Science Unit 4, Grade 7 (Letters & Devotion)

Description

Ecosystems: Matter and Energy in Communities is Unit 4 of Life Science: Systems, Energy, and Change (Grade 7), the Letters & Devotion Science course, complete in one printable PDF: 10 lessons, the unit check-up and the answer key, 61 pages.

• Trophic level classification within a food chain
• Food web diagram construction from ecosystem description
• The 10% energy transfer rule and its biological cause
• Percentage transfer calculation from biomass data using proportional reasoning
• The distinction between one-way energy flow and cyclic matter movement in ecosystems
• Decomposer function as the mechanism completing matter cycling
• Carrying capacity and limiting factors in a real population dataset
• Indirect trophic effects of keystone species removal in an unfamiliar food web
• The relationship between a textual claim and quantitative/graphical evidence about ecosystem disturbance
• Synthesis of energy-pyramid construction, matter-cycling diagramming, and disturbance argument for a novel real ecosystem

Every lesson is written for a parent with no teaching background: it opens with a short script to read aloud, names the specific wrong idea a student is likely to reach for and how to correct it, and closes with a practice sheet you may copy for your household. Scripture references are King James Version throughout. Black-and-white, 8.5 x 11 in. The whole year of this course is also in this store as a single book.

AI note: The written content of this resource was drafted with AI tools, then reviewed and edited by the author.