Adding Fractions With Unlike Denominators (Screencast)

By Tina Dietzman

Learners follow steps to add fractions with different denominators. They also review fraction concepts, do a drag-and-drop exercise involving fraction terms, and add fractions with common denominators.

Adding Fractions With Unlike Denominators

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.

Statics - Trig: The Law of Sines Using a TI-86 Calculator

By Steve Whitmoyer

In this interactive and animated object, learners apply the Law of Sines to determine forces using a TI-86 calculator.

Units of Measurement

By Barbara Anderegg

In this learning activity you'll explore units of measurement.

Identifying Engineering Notation

By Ron Wallberg

The learner will represent very large and very small numbers in engineering notation.

Scientific Notation - Converting Scientific Notation to Ordinary Numbers

By Danene Dusenske

In this learning activity you'll review an explanation of scientific notation and complete exercises to convert scientific notation to ordinary numbers.

Joint Variation

By Terry Lark

In this learning activity you'll practice calculating a joint variation problem.

Personal Spending/Savings Plan for Teenagers

By Kristin Biekkola

In this learning activity you'll review the basics of budgeting, income, and spending. Using an on-line form, you can create your own monthly budgets and a pie chart of your spending habits.

Math Reasoning: The Parts Room

By Dave Bunnow, Rosie Bunnow

Learners apply math problem-solving skills in a workplace simulation. This learning object has audio content.

Scientific Notation - What is it?

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

Mathematical Expression of an AC Sine Wave

Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.

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.

Quadratic Variation

In this learning activity you'll practice calculating a quadratic variation problem.

Statics - Trig: Pythagorean Theorem Calculations Using Excel

Learners examine how to solve problems using the Pythagorean Theorem in Excel. Practice problems are included.

The Triangle

By Allen Reed, Douglas Jensen

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

Buying a Car: What It Really Costs with Finance Charges (Screencast)

By Michele Williams

In this learning activity you'll calculate the difference in the total cost of a new car when using cash and when paying for the car with a 60-month loan.

Calculating Monthly Expenses

In this learning activity you'll establish your budget by determining your earnings, expenses, and goals.

Binary to Decimal Number Conversion

In this learning activity you'll practice calculating the between the binary number system and the decimal number system.

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.

Variation - Application Problems

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

Identifying the Number of Significant Digits

Learners will identify the number of significant digits in practice problems.

Strength of Materials: The Centroid of a Circle

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

The Cube

Learners study the properties of a cube 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.