Algebra Lessons - 4

This is a series of mathematics lessons that will review the important topics in algebra. It is presented in videos by the Portland Community College.

Math 60 - Lesson 11a
Ratio, proportions and rates
Ratio, rates and rational numbers, Proportions

Math 60 - Lesson 11b
Problem Solving with Proportions
Direct proportions, Inverse or reciprocal proportions
Proportions in geometry

Math 60 - Lesson 12a
2-dimensional geometry, Introduction to perimeter and area
Perimeter, circumference and linear units

Math 60 - Lesson 12b
Three-dimensional geometry
Introduction to volume and surface area
Volume and surface area formulas

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Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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