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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."
Ratios and Proportions
By Allen Reed, Douglas Jensen
In this interactive object, learners simplify ratios and solve problems using proportions. All terms are defined.
Simplifying Algebraic Expressions: Division
Learners read definitions of the terminology associated with algebraic operations and then follow steps to use the fundamental laws of division to simplify algebraic expressions.
Excel: Entering a Complex Number
By Patrick Hoppe
Learners examine the complex number function to convert real and imaginary coefficients into a complex number.
The Mathematics of Buying: Putting It All Together
By Mary Lee Rudnick-Kaun
Learners tackle this interactive learning object after studying the mathematics of buying. This activity ties together the ideas of net cost, list price, trade discounts, cash discounts, net cost equivalent, and single discount equivalent, as well as the concepts of part, base, and rate.
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