Learners study the properties of a right circular cone and use geometric formulas to find volume and surface area.

In this animated object, learners examine the concept of gear ratios. The number of teeth, diameters, and velocity relationships are discussed and calculated using linear ratio equations. A quiz completes the activity.

In this animated activity, learners read about the properties of a square and its components. They then work practice problems to find the perimeter and area of squares.

In this interactive object, part 3 in a series, learners follow the steps of the “mathemagician” to examine four numerical curiosities: What’s Special About 1089, Perfect Squares: 1089 and 9801, The Mathematical Significance of 1776, and The Calculator Number Game. The learner will also study six number patterns and look at one remarkable table. Immediate feedback is provided.

Students read the rules used in multiplying and dividing signed numbers. They view examples and work practice problems.

Students read how to organize their work when multiplying more than two signed numbers. A review and practice problems complete the activity.

Learners follow the steps for adding and subtracting signed numbers and complete practice exercises.

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

Students solve five problems to determine the total impedance of a series-parallel circuit. Immediate feedback is given.

Numbers over 100 in Portuguese

CE 121 SI 2/11/21

გონების გასავარჯიშებელი

Match the numbers in 'ōlelo Hawai'i to their number in English.