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Social Studies · 7th Grade
Trade and Interdependence
Why countries trade at all, and what it costs them.
How to use it
Check the labels on five things at home. Map where they came from.
Free · print-ready PDF · US Letter and A4
- Grade
- 7th Grade
- Ages
- 12–13
- Subject
- Social Studies
- Pages
- 1
The rest of the 7th Grade wall
49 more posters, all free to print — 11 of them here.
Why Every World Map Is WrongYou cannot flatten a sphere without distorting something.Systems of GovernmentFour ways countries decide who holds power.Economic SystemsWho decides what gets made — and every real country is a mixture.Reading a Population PyramidA graph shape that tells you a country's future.Solving ProportionsTwo equal ratios, and the cross-multiplication that solves them.Constant of ProportionalityThe single number that turns one quantity into the other, every time.Percent Increase and DecreaseChange over original — and why the original is always the bottom.Tax, Tip and DiscountThree names for the same multiplication.Operations with Rational NumbersNegative fractions and decimals — convert to one form, then apply the sign rule.Two-Step EquationsUndo in reverse order: plus and minus first, then times and divide.Variables on Both SidesCollect the letters on one side and the numbers on the other.