In a series of practice problems, learners use the addition or subtraction method to solve systems of linear equations, also called "simultaneous linear equations."

In a series of practice problems, learners use the substitution method to solve systems of linear equations, also called "simultaneous linear equations."

Students view the equations used to determine the ac parameters of the transistor circuit.

In this animated activity, learners examine the terms "half-reaction," "oxidizing agent," and "reducing agent" and follow five interactive examples to balance equations for oxidation-reduction reactions. Three problems are provided as a self-check.

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.

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

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

Learners use the coefficients in a balanced equation to develop the mole ratios of reactants and products involved in the reaction. Five interactive examples illustrate the method, and students test their knowledge by working four problems.

Learners view a horizontal curve and mouse over the diagram to read descriptions of its components and related equations.

In this interactive object, learners identify charges on ions, write new formulas based on charge, and balance equations using coefficients.

In this activity you'll calculate equations using the order of operations. You'll be introduced to what it is and how it works.

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.

The learner will understand the operation of the six fundamental logic gates and the inverter by using truth tables, Boolean Algebra equations, switch analogies, and written statements.