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Science · 8th Grade
Natural Selection
Four conditions, and what the theory does and does not claim.
How to use it
Individuals do not evolve. Populations do. That distinction fixes most misconceptions.
Free · print-ready PDF · US Letter and A4
- Grade
- 8th Grade
- Ages
- 13–14
- Subject
- Science
- Pages
- 1
The rest of the 8th Grade wall
49 more posters, all free to print — 11 of them here.
Alkali MetalsGroup 1 — The most reactive metals.Alkaline Earth MetalsGroup 2 — Reactive metals, but noticeably less so than group 1.Transition MetalsGroups 3–12 — The familiar metals.HalogensGroup 17 — The most reactive non-metals.Noble GasesGroup 18 — Full outer shells, so they barely react with anything at all..The Periodic TableThe full table by group, with metals, non-metals and the families named.Lab Report GuideWhat goes in each section of a lab report, and how to write a conclusion that scores.Newton's Three LawsWhy things move, keep moving, and push back.Plate TectonicsWhy earthquakes and volcanoes happen where they do.Energy Transfer and ConservationEnergy is never lost — but it does become less useful.Reading the Table by PositionWhere an element sits tells you how it will behave.