In this lesson, you will learn about "proportional relationships," one of the most important topics concerning quantities and change. The goal is not simply to memorize words, but to be able to explain the principles and reasons in your own words.
Key Point
A proportional relationship is one in which, when one quantity becomes 2 or 3 times as large, the other also becomes 2 or 3 times as large.
A proportional relationship is one in which, when one quantity becomes 2 or 3 times as large, the other also becomes 2 or 3 times as large.
Important Points
- Check not only the conclusion but also the reason for it
- Distinguish similar terms and exceptions
- Try applying the same way of thinking to other examples
Practice
- Explain the key point in two sentences.
- Give one common misunderstanding and explain what is different about it.
- Check it by applying it to a familiar or specific example.