Day 25 of 30
Solve simple proportions
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Learning Objective
I can solve simple proportions.
Today we will learn how to solve simple proportions. Math helps us solve problems and understand the world around us.
A proportion is an equation that shows two ratios are equal. For example: 1/2 = 2/4 is a proportion. If you know three parts of a proportion, you can find the fourth by cross-multiplying. Proportions are useful for scaling recipes, reading maps, and solving problems about similar shapes. They help us maintain the same relationship between quantities when we change the size.
Let's break this down step by step so it's easy to understand. Follow along with the examples, and don't worry if it takes some practice to get the hang of it!
Remember: Making mistakes is part of learning. If something is tricky, try again, look at the examples, or ask for help.
A question we need to solve
The answer to a problem
Instructions
Materials Needed
- Counters or objects
- Pencil
- Practice sheet
The ratio of boys to girls is 3:5. If there are 6 boys, how many girls are there?
Express the ratio 6:9 in simplest form.
If 4 apples cost $2, how much do 10 apples cost?
Teaching Tip
For younger learners: Use concrete objects and hands-on activities when teaching solve simple proportions. Keep sessions short (10-15 minutes) and incorporate movement or songs when possible.