Adding or Subtracting Algebraic Fractions
By Jim Cihak
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.
Inverse Variation
By Terry Lark
In this learning activity you'll practice calculating an inverse variation problem.
Determinant of the Third Order
By Roy Peterson
In this learning activity you'll evaluate the determinant of a 3 X 3 matrix.
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.
Simplifying and Multiplying Algebraic Fractions
In this interactive object, learners follow step-by-step instructions for reducing algebraic fractions so that they can then be multiplied. This activity has audio content.
Excel: Complex Addition
By Patrick Hoppe
Students view the steps to follow to add complex numbers in Excel.
Solving Systems of Linear Equations Using the Substitution Method
By Allen Reed, Douglas Jensen
In a series of practice problems, learners use the substitution 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.
Finding the Lowest Common Denominator for Algebraic Fractions
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.
Solving Systems of Linear Equations Using the Addition or Subtraction Method (Screencast)
In a series of practice problems, learners use the addition or subtraction method to solve systems of linear equations, also called "simultaneous linear equations."
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.
Direct Variation
In this learning activity you'll walk through a direct variation problem.
Simplifying Algebraic Fractions that Contain No Addition or Subtraction
In this highly interactive and animated object, learners follow a step-by-step process to reduce algebraic fractions, which contain no addition or subtraction, to their simplest, most elementary form. Immediate feedback is provided. This activity has audio content.
Numerical Curiosities: Part 3
By Jeganathan Sriskandarajah
In this interactive object, part 3 in a series, learners follow the steps of the “mathemagician” to examine four numerical curiosities: What’s Special About 1089, Perfect Squares: 1089 and 9801, The Mathematical Significance of 1776, and The Calculator Number Game. The learner will also study six number patterns and look at one remarkable table. Immediate feedback is provided.
Combined Variation
In this learning activity you'll practice calculating a combined variation problem.
Solving Equations that Contain Algebraic Fractions
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.
Numerical Curiosities: Part 2
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.
Variation
In this learning object you'll review direct, inverse, joint, quadratic, and combined variations.
Simplifying Algebraic Expressions: Multiplication
Learners read definitions of the terminology associated with algebraic operations and then follow steps to use the fundamental laws of multiplication to simplify algebraic expressions.
Variation - Application Problems
In this learning activity you'll practice two variation application problems.
Simplifying Algebraic Fractions that Contain Addition and/or Subtraction
In this interactive object, learners follow step-by-step instructions for reducing algebraic fractions, which contain addition and/or subtraction, to their simplest form. This activity has audio content.
Simplifying Square Roots
In this learning activity you'll simplify square roots involving the product of a numeric and variable term.
Numerical Curiosities: Part 4
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.
Joint Variation
In this learning activity you'll practice calculating a joint variation problem.
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.