In this learning activity you'll review the facts and interpretations, determine a verdict, and respond to questions.

In this animated and interactive object, learners calculate the area and centroid of a circle.

In this interactive and animated object, learners apply the Law of Sines to determine forces using a TI-86 calculator.

In this learning object designed for educators, users review strategies for teaching reading in all classrooms, not just in the reading or language arts classroom. Two pages contain audio.

In this interactive object, learners examine the operation of an inverting operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.

In this interactive object, learners solve a school mystery by identifying the "suspects" in the hierarchy of questioning: knowledge, comprehension, application, analysis, synthesis, and evaluation. This activity was designed for teachers and instructional assistants.

Learners test their knowledge of the framework of the U.S. government in this 13-question quiz.

Learners read an explanation of how to connect two 7485 ICs to compare binary numbers by creating an 8-bit comparator. Diagrams and charts are presented.

In this learning activity you'll examine how a data file is broken into packets and transmitted over the Internet.

In this animated activity, learners examine how ground fault circuit interrupters work and why they are an important safety feature.

In this interactive object, learners examine standard and metric thread specifications used in engineering drawings. In a brief quiz, they identify various internal and external thread representations.

In this interactive object, learners read a brief summary of the principles of cash basis accounting and then check their knowledge of transactions in a drag-and-drop exercise.

In this interactive object, learners answer questions about doing research on the Internet.

In this animated object, students view diagrams of the UJT as it is used in the relaxation oscillator circuit. Waveforms illustrate how the circuit operates through several time periods.

Students read an explanation of power factor in a power distribution and how it can be improved by using a power factor correction capacitor bank. A brief quiz completes the activity.

Students view the parts and movements of a combustion engine in this animated activity. Each part is described.

In this animated object, learners read the dimensions of the different types of vehicles typically considered in highway design.

Learners view an animation showing how the volume of a given quantity of gas varies directly with its temperature.

In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.

In this interactive object, learners review respiratory system terminology and then match the terms with their definitions.

In this interactive object, learners identify the symptoms of fluid volume excess and fluid volume deficit.

Learners listen to an office conversation. They then review tips on how to improve the feedback they give others and practice writing a response based on the conversation they heard.

Learners examine ways to eliminate or minimize the wastes found in business processes. A matching exercise completes the activity.

Learners examine how to raise a number to a power using the TI-83 Plus calculator. Sample problems are given using both real and complex numbers.

Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.