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In this interactive object, learners simplify ratios and solve problems using proportions. All terms are defined.
Operations with Zero
By Allen Reed, Douglas Jensen
Learners review the basic math operations involving zero, emphasizing that division by zero is undefined. Examples are given.
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.
Learners study the properties of a cube and use geometric formulas to find volume and surface area.
Welcome to the World of Prime Numbers
By Jeganathan Sriskandarajah
In this learning activity you'll use a chart and a calculator to find prime numbers 1 and 100.
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