Use Ohm's law, Watt's law, and the power equation to derive formulas for the DC power wheel.

In this animated learning object, users view the process of entering a formula in an Excel spreadsheet. Several different methods and associated examples are given.

In this learning activity you'll review the format for a five-paragraph essay, which is the second part of the GED Writing Test.

Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.

Students read how to lock a cell that is being referenced in a formula so that it does not automatically show an increment when the formula is copied.

In this interactive object, the learner practices identifying charges on ions.

In this animated and interactive object, learners use an algebraic formula to solve a problem involving distance, rate, and time.

Learners read an explanation of the L/R time constant and examine the formula for calculating the instantaneous current value. The current is graphed as it climbs to maximum or drops to zero.

In this animated and interactive object, learners examine the formula for horsepower and work practice problems.

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?

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

Learners read about the concepts of true power, reactive power, and apparent power, and are introduced to the power factor formula. A short quiz completes the activity.

Learners read how inches of water column is used as a unit of pressure measurement. Practical applications and a conversion formula to psi are included.

Students read an explanation of the common-source and source-follower amplifiers. Gain formulas are developed and an example is given.

Students read the terms associated with the Bipolar Junction Transistor (BJT) . They also view formulas for dc current and voltage.

The learner will apply the three formulas used to find the total resistance of three types of parallel resistor circuit configurations.

In this animated object, students examine the role equilibrium plays in everyday life. Formulas are presented in an interactive way.

Students view the formulas to be used to convert a parallel impedance to a series impedance.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.