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 Percent Problems Using a Pyramid Grid

By MarQulyn McKinney

Students use the pyramid method to solve percent problems. The pyramid grid provides a visual way to set up the equation.

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.

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.

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.

An Algorithm for Binary Subtraction

By Kevin Ritzman

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

Multiplying Monomials

In this learning activity you'll identify and calculate the multiplication of monomials.

Solving Equations: Properties of Equality

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

Measuring Length in the Metric System

By Nabila Dahche

In this learning activity you'll explore how units in the metric system are related to each other and practice locating measurements on a metric line.

Subtracting Mixed Number Fractions with Borrowing

By Pat Walker

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

Karnaugh Maps

By Patrick Hoppe

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

Learning to Use the Casio fx-260 Solar Calculator

By Suzi Hunsader

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

Learn to Count by Common Radian Units

By Laura Shears

The target audience of this learning object is trigonometry students who have already learned what a radian is and have already derived the key values of the coordinates associated with common radian units, but now need to practice finding those values on the unit circle. The student does not need to know the definition of the six trig functions to do this activity.

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.

Long Division - Step-by-Step

By Barbara Laedtke

In this learning activity you'll calculate the answers to long division problems.

How to Convert from One Unit to Another in the Metric System

In this learning activity you'll practice converting from one metric unit to another.

Adding Fractions With Unlike Denominators

By Tina Dietzman

Learners follow steps to add fractions with different denominators. They also review fraction concepts, do a drag-and-drop exercise involving fraction terms, and add fractions with common denominators.

Simplifying Algebraic Expressions: Addition & Subtraction

Learners read definitions of the terminology associated with algebraic operations and then follow steps to simplify algebraic expressions.

Cramer's Rule

In this learning activity you'll solve systems of two linear equations in two unknowns by determinants.

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.

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.

Simplifying Square Roots

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

The Rectangular Solid

Learners study the properties of a rectangular solid and use geometric formulas to find volume and surface area.

Ratios and Proportions

In this interactive object, learners simplify ratios and solve problems using proportions. All terms are defined.

The Regular Square Pyramid

Learners study the properties of a regular square pyramid and use geometric formulas to find volume and surface area.