7th Grade · Lab science · 4 units

Earth & Life Systems

Week 1 is free. Tap Week 1. The reading and the problems are on that lesson. Weeks 2–36 open with a Life Academy plan ($35/month per student or $69/month per family (up to 4 students)).

Unit 1: Foundations

Weeks 1–9

Week 1Ecosystems and biotic/abiotic Week 2Matter cycles (carbon lite)Week 3Energy pyramids Week 4Population change Week 5Earth systems interact Week 6Weathering, erosion, deposition Week 7The rock record Week 8Geologic time (order, not dates cram)Week 9Waves: mechanical

Unit 2: Building fluency

Weeks 10–18

Week 10Waves: light Week 11Spectrum and color Week 12Thermal energy Week 13Particle model of heat Week 14Density Week 15Buoyancy Week 16Chemical reactions intro Week 17Conservation of mass Week 18Midyear lab practical

Unit 3: Depth & application

Weeks 19–27

Week 19Cells to organisms Week 20Photosynthesis and respiration pair Week 21Genetics intro: traits Week 22Reproduction vs heredity (age-right)Week 23Natural selection (evidence, not slogans)Week 24Biodiversity Week 25Human impact on climate Week 26Engineering for the environment Week 27Models that predict

Unit 4: Mastery & showcase

Weeks 28–36

Week 28AI as a pattern-guesser (science ethics)Week 29Probability in genetics (Punnett lite)Week 30Seismic waves Week 31The atmosphere Week 32Ocean currents intro Week 33Review: systems Week 34Design with climate constraint Week 35CER research mini Week 36Grade 7 science portfolio