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.

Subtracting Mixed Number Fractions with Borrowing

By Pat Walker

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

Sine Bar

By Barbara Anderegg

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

Operations with Zero

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

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.

Solving Equations: Properties of Equality

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

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.

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.

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.

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 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 Binary Subtraction

Students use the Base Minus One Complement method to perform binary subtraction. This learning activity has audio content and immediate feedback.

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.

Simplifying Square Roots

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

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.

Evaluating the Six Trigonometric Functions

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

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.

Excel: Converting Radians to Degrees

Students read how to use the DEGREES() function to convert radians to degrees.

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.

Needs Vs. Wants

By Kristin Biekkola

In this learning activity you'll identify the difference between needs and wants related to building a personal budget.

What Is a Radian?

In this learning activity you'll explore a graphical depiction of a radian for angular measurement.

Casio fx-260 Solar Calculator - Finding the Keys

By Suzi Hunsader

In this learning activity you'll practice identifying keys on the Casio fx260 Solar Calculator.