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In a series of practice problems, learners use the substitution method to solve systems of linear equations, also called "simultaneous linear equations."
An Introduction to Algebraic Word Problems
By Kevin Ritzman
In this animated object, learners follow the steps for solving word problems using algebra. An introductory example is explained.
By Allen Reed, Douglas Jensen
Learners study the properties of a sphere and use geometric formulas to find volume and surface area.
Ratios and Proportions
In this interactive object, learners simplify ratios and solve problems using proportions. All terms are defined.
An Algebraic Word Problem Involving Motion: Case 1
In this animated and interactive object, learners use an algebraic formula to solve a problem involving distance, rate, and time.
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