
This site has a tutorial and then some examples of how to write proportions to solve for missing lengths of similar polygons
Math.com

This site helps to explain the different types of tons and how to convert them.
Metric Conversions

In this Early Edge video lesson, you'll learn more about TwoStep Equations, so you can be successful when you take on highschool Math & Algebra.
The Princeton Review

In this Early Edge video lesson, you'll learn more about Introduction to Algebra, so you can be successful when you take on highschool Math & Algebra.
The Princeton Review

In this Early Edge video lesson, you'll learn more about Proportions, so you can be successful when you take on highschool Math & Arithmetic.
The Princeton Review
