Fundamental Laws of Algebra

By Allen Reed, Douglas Jensen

Learners review the fundamental laws of algebra including the commutative law of addition, the commutative law of multiplication, the associative law of addition, the associative law of multiplication, and the distributive law. Examples are given.

Sine Bar

By Barbara Anderegg

In this learning activity you'll examine how a sine bar is used to measure angles.

Subtracting Mixed Number Fractions with Borrowing

By Pat Walker

In this learning activity you'll perform subtraction calculations using borrowing with mixed number fractions.

Factoring by the Difference of Two Perfect Squares

By Roy Peterson

In this learning activity you'll factor problems using the difference of two perfect squares.

Operations with Zero

Learners review the basic math operations involving zero, emphasizing that division by zero is undefined. Examples are given.

Order of Operations (Screencast)

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.

Karnaugh Maps

By Patrick Hoppe

Learners examine the Karnaugh map for a three-variable system. Several examples are given.

Statistical Data Types

By Thomas Pomykalski

Learners read about the different uses of the word "data." They will test themselves on examples of data that is singular, plural, qualitative, quantitative, nominal, ordinal, interval, rational, discrete, or continuous.

Solving Equations: Properties of Equality

In this interactive object, learners examine the properties of equality and use those properties to solve simple equations.

Labeling a Right Triangle

In this learning activity you'll identify the sides of a right triangle with respect to the angles.

Identifying Key Words in Math Problems

By Lori Pennock, Sharon Chase, Robin Horne, Danene Dusenske, Barbara Foye

In this learning activity you'll read key words that direct you to add, subtract, multiply, or divide.

An Algebraic Word Problem Involving Motion: Case 2

By Kevin Ritzman

In this animated object, learners use an algebraic formula to solve the following problem: An airplane travels a certain distance with the wind in the same amount of time that it takes to travel a shorter distance against the wind. Given a constant wind speed, what is the speed of the plane without a wind?

An Algorithm for Converting an Octal Number to a Decimal Number

Learners examine two methods for converting an octal number to a decimal number. Exercises are provided at the end of the learning object.

Simplifying Square Roots

In this learning activity you'll simplify square roots involving the product of a numeric and variable term.

Gear Ratio Concepts (Screencast)

By James Bourassa

In this screencast, learners examine the concept of gear ratios. The number of teeth, diameters, and velocity relationships are discussed and calculated using linear ratio equations.

Excel: Rectangular to Polar Conversion for Magnitude

Learners read how to convert complex numbers to their polar equivalent in Excel.

An Algorithm for Converting a Decimal Number to a Hexadecimal Number

In this animated activity, learners examine a systematic method for converting a decimal number (base 10) into a hexadecimal number (base 16).

An Algorithm for Converting a Hexadecimal Number to a Decimal Number

In this animated and interactive object, learners follow two methods for converting a hexadecimal number to a decimal number. They test their knowledge in exercises at the end of the learning object.

Evaluating the Six Trigonometric Functions

In this learning activity you'll evaluate the six trig functions using a scientific calculator.

An Algebraic Word Problem Involving Motion: Case 1

In this animated and interactive object, learners use an algebraic formula to solve a problem involving distance, rate, and time.

Excel: Determining the Square Root of a Complex Number

Learners view the steps for determining the square root of a complex number in Excel.

Casio fx-260 Solar Calculator - Defining the Keys

By Suzi Hunsader

In this learning activity you'll define the keys on the Casio fx-260 Solar Calculator.

Excel: Entering a Complex Number

Learners examine the complex number function to convert real and imaginary coefficients into a complex number.

Excel: Rectangular to Polar Conversion for the Phase Angle in Radians

The conversion from rectangular to polar mode phase angle in radians is demonstrated in Excel.

Joint Variation

By Terry Lark

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