An Introduction to Algebraic Word Problems

By Kevin Ritzman

In this animated object, learners follow the steps for solving word problems using algebra. An introductory example is explained.

Order of Operations

By Barb Hummel

In this activity you'll calculate equations using the order of operations. You'll be introduced to what it is and how it works.

Statics: Resultant Calculations via Graphical Method

By Steve Whitmoyer

In this interactive learning object, students calculate a resultant of multiple forces acting in a concurrent, coplanar condition.

Learning About Your Earnings

By Michele Williams

In this learning activity you'll practice reading and interpreting a paychecks and paycheck stub.

The TI-83 Plus Calculator: Complex Number Conversion

By Patrick Hoppe

Learners examine how to convert numbers from rectangular to polar form and from polar to rectangular form using a TI-83 Plus calculator.

Solving Systems of Linear Equations Using the Addition or Subtraction Method

By Allen Reed, Douglas Jensen

In a series of practice problems, learners use the addition or subtraction method to solve systems of linear equations, also called "simultaneous linear equations."

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.

Determinant of the Third Order

By Roy Peterson

In this learning activity you'll evaluate the determinant of a 3 X 3 matrix.

Reconciling a Business Checking Account Statement

By Virginia Riggs

Learners examine a bank statement and a reconciliation form and study how to balance a checking account.

Excel: Complex Addition

Students view the steps to follow to add complex numbers in Excel.

Numerical Curiosities: Part 2

By Jeganathan Sriskandarajah

In part 2 of this series, learners follow the steps of the “mathemagician” to examine these numerical curiosities: The 189 Challenge; An Armstrong Number: What’s Special About 153? Is 495 Different or Indifferent? Is 6174 Different or Indifferent? It is always 618, and Beginning and Ending the Same.

An Algorithm for Converting a Decimal Number to an Octal Number

In this animated object, learners examine a systematic method for converting a decimal number (base 10) into an octal number (base 8).

Inverse Variation

By Terry Lark

In this learning activity you'll practice calculating an inverse variation problem.

Quadratic Variation

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

An Introduction to the Powers of 10

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

Converting Values in Engineering Notation

By Ron Wallberg

The learner will convert various values to engineering notation.

Statics - Trig: Pythagorean Theorem Calculations Using a TI-86

In this animated and interactive object, the learner uses a TI-86 calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.

The Circle

By Douglas Jensen

In this animated and interactive object, learners examine the definitions and formulas for radius, diameter, circumference, and area. Students also solve practice problems involving the circumference and area of a circle.

The Right Circular Cone

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

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.

Getting Acquainted With Your Calculator

By Judy Jones

In this learning activity you'll practice using your scientific calculator to fill in a mathematical crossword puzzle.

The Normal Distribution and the Empirical Rule

By Jolene Hartwick

In this learning activity you'll use the Empirical Rule to calculate the percentages of data between two data points.

Solving Equations that Contain Algebraic Fractions

By Jim Cihak

Learners use the lowest common denominator to simplify and then solve equations with algebraic fractions. Immediate feedback is provided. This animated object has audio content.

What I Want Now....The Hidden Costs of Rent-to-Own

By Kristin Biekkola

In this learning activity you'll analyze the costs of rent-to-own buying plans and compare those plans to other consumer strategies.

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.