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.
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.
Finding the Lowest Common Denominator for Algebraic Fractions
By Jim Cihak
In this interactive and animated object, learners follow instructions for finding the lowest common denominator for a group of algebraic fractions. Immediate feedback is provided. This activity has audio content.
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.
Factoring a Quadratic Trinomial
In this learning activity you'll factor an algebraic expression of the form AX(Squared) + BX + C using the FOIL technique.
Excel: Entering a Complex Number
By Patrick Hoppe
Learners examine the complex number function to convert real and imaginary coefficients into a complex number.
Excel: Determining the Square Root of a Complex Number
Learners view the steps for determining the square root of a complex number in Excel.
Excel: Complex Addition
Students view the steps to follow to add complex numbers in Excel.
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.
Direct Variation
By Terry Lark
In this learning activity you'll walk through a direct variation problem.
Determinant of the Third Order
In this learning activity you'll evaluate the determinant of a 3 X 3 matrix.
Combined Variation
In this learning activity you'll practice calculating a combined variation problem.
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.
An Algebraic Word Problem Involving Motion: Case 2
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 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.
Adding or Subtracting Algebraic Fractions
Learners follow step-by-step instructions for finding the lowest common denominator for a group of algebraic fractions and then enter their answers to three problems. Immediate feedback is provided. This activity has audio content.
A Visual Approach To Simplifying Radicals
In this animated object, learners follow a process for simplifying radicals.