The Parallelogram

By Allen Reed, Douglas Jensen

In this animated activity, learners read the definition of a parallelogram and then find the perimeter and area of parallelograms in practice problems.

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.

The Triangle

Learners examine the properties of a triangle and work practice problems to find a triangle's perimeter and area.

Grouped Numerical Frequency Distributions - Determining the Range, Class, and Width: Fourth in a Series

By Thomas Pomykalski

Students examine an Excel spreadsheet to determine range, class, and width.

Grouped Numerical Frequency Distributions -- Determining the Lower and Upper Limits: Fifth in a Series

Learners follow steps to establish the lower and upper limits in a spreadsheet.

Simplifying and Multiplying Algebraic Fractions

By Jim Cihak

In this interactive object, learners follow step-by-step instructions for reducing algebraic fractions so that they can then be multiplied. This activity has audio content.

Scientific Notation - What is it?

By Danene Dusenske

In this learning activity you'll explore what scientific notation is and how it's used to express very large and very small numbers.

Numerical Curiosities: Part 4

By Jeganathan Sriskandarajah

In this fourth part in a series, learners follow the steps of the “mathemagician” to examine three numerical curiosities: Be a Psychic by Predicting Birthdays, Predict a Card with Mind Reading, and Predict the Three Die Values Your Opponent Has Rolled. Learners will also study palindromic numbers and look at two alphametric puzzles.

Ungrouped Numerical Frequency Distributions

Learners follow the steps required to construct an ungrouped frequency distribution using either manual methods or a spreadsheet.

Grouped Numerical Frequency Distributions: An Overview -- First in a Series

In this interactive object, students read about organizing data in a tabular form. A brief quiz completes the activity. This is the first in a series of six learning objects.

Variation - Application Problems

By Terry Lark

In this learning activity you'll practice two variation application problems.

An Introduction to the Powers of 10

By Kevin Ritzman

The learner will evaluate powers of 10 with integer exponents and multiply decimal numbers by powers of 10 with integer exponents.

Understanding Rounding

By Laurie Jarvis

In this learning activity you'll practice rounding numbers.

Geometric Figures and Parts

By Mary LeBrun

In this learning activity you'll identify identify two-dimensional geometric shapes in a matching exercise.

Right Triangles That Are Special: Using the Pythagorean Theorem

By Michele Williams

In this learning activity you'll apply the Pythagorean Theorem to isosceles and equilateral triangles.

Basic Terms in Division

By Barbara Laedtke

In this interactive object, the learner examines the basic terms used in division. A quiz completes the activity.

Strength of Materials: The Centroid of a Circle

By Steve Whitmoyer

In this animated and interactive object, learners calculate the area and centroid of a circle.

The TI-83 Plus Calculator: The Power Function

By Patrick Hoppe

Learners examine how to raise a number to a power using the TI-83 Plus calculator. Sample problems are given using both real and complex numbers.

The TI-83 Plus Calculator: Using the LOG Function

Students follow the correct keystrokes to calculate the logarithm of a number.

The Standard Normal Distribution

By Jolene Hartwick

In this learning activity you'll calculate the numeric value of an area when given the z scores.

Law of Sines

By Roy Peterson

In this learning activity you'll apply the Law of Sines in the solution on an oblique triangle when provided with two angles and the side opposite one of the angles.

An Algorithm for Octal Subtraction

Learners use the Base Minus One Complement method to do octal subtraction.

Grouped Numerical Frequency Distributions - Identifying Low and High Values: Third in a Series

Students follow step-by-step directions for entering data into a spreadsheet and reporting the results.

Dividing and Simplifying Algebraic Fractions

Learners follow step-by-step instructions for dividing algebraic fractions. They begin by reducing the fractions to their simplest form. Immediate feedback is provided. This activity has audio content.

Important Zeros

By Mona Wenrich

In this learning activity you'll assess which zeros are important when defining a number and which zeros can be dropped.