- Math
- Proportions
- Age 9-14
-
level: 6
- English
คำแนะนำของผู้เขียน
Second of a set of three - Learning how to solve proportions by the cross method
An Introduction to Proportions 2-3
คำแนะนำของผู้เขียน
Second of a set of three - Learning how to solve proportions by the cross method