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Social Studies · 6th Grade
Ancient River Civilisations
Four civilisations, and the one thing they all had in common.
How to use it
Find each river on a map. The pattern is impossible to miss.
Free · print-ready PDF · US Letter and A4
- Grade
- 6th Grade
- Ages
- 11–12
- Subject
- Social Studies
- Pages
- 1
The rest of the 6th Grade wall
49 more posters, all free to print — 11 of them here.
Supply and DemandWhy prices move, explained without a single graph.Adding IntegersSame signs add, different signs subtract — and the sign follows the bigger one.Subtracting IntegersEvery subtraction is an addition wearing a disguise.Multiplying and Dividing IntegersCount the minus signs. Even means positive, odd means negative.Absolute ValueDistance from zero — which is never negative, however negative the number is.RatiosPart to part, or part to whole — and why mixing them up changes the answer.Unit RateHow much for exactly one — the number that makes any two deals comparable.Percent of a NumberTwo reliable methods, and the benchmarks worth doing in your head.The Three Percent QuestionsFind the part, find the percent, or find the whole — one setup handles all three.Algebra VocabularyTerm, coefficient, constant, variable — the four words every question assumes.Combining Like TermsOnly terms with identical variable parts can be added together.