First-year junior high math midterm in the second semester: points are lost on transposition signs and word problems

The second semester midterm is the first major hurdle for first-year junior high math. Unlike the positive/negative numbers ...

10 Word Problems on Direct and Inverse Proportion by Pattern — Solving by Determining Whether to 'Divide to Keep Constant' or 'Multiply to Keep Constant'

Introduction: Starting by confirming what you can already doYou should already be able to do multiplication and division. You ...
BBC

Key points about equations of direct and inverse proportion

In this graph, 𝑥 and 𝑦 are directly proportional. This means that when 𝑥 doubles, 𝑦 also doubles, and when 𝑥 triples, so does 𝑦. In fact, for all coordinates on this line, you could multiply or ...
TES

Proportion: Direct and Inverse Proportion Powerpoint (Higher GCSE)

A comprehensive powerpoint that covers the topic of Proportion: Direct and Inverse Proportion. The Powerpoint models solutions to key questions in the topic, followed by questions for the students to ...
TES

Indirect / Inverse Proportion

Excellent animation to take you through Inverse Proportion using algebraic equation or formula in calculations. A bundle is a package of resources grouped together to teach a particular topic, or a ...
IndieWire

The Mathematics of Sundance, or Size Doesn’t Matter; Inverse Proportionality in Park City

With the Sundance Film Festival right around the corner, I thought it would be appropriate to re-publish a little post I wrote some time ago in the waning days of the 2008 fest. Originally published ...
BBC

Ratio, proportion and rates of change

Revise how to work out equivalent ratios and simplify ratios by dividing both sides by the highest common factor. Test yourself with practice questions and a game. NEW: Ratio and fractions, and ...