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Social Studies · 7th Grade
Reading a Population Pyramid
A graph shape that tells you a country's future.
How to use it
Compare two countries' pyramids. The difference in shape predicts very different problems.
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.Trade and InterdependenceWhy countries trade at all, and what it costs them.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.