In this animated and interactive object, learners follow two rules to write unit conversion fractions.

Students read about the concept of unit weight relating to the 3-phase diagram and perform calculations.

Students read how to determine and calculate the saturated unit weight for a given sample of soil or aggregate, based on the weight-volume relationship. Practice problems complete the activity.

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.

Students read how to determine and calculate the dry unit weight for a given sample of soil or aggregate based on the weight-volume relationship.

Learners examine a Filter-Regulator-Lubricator (FRL) unit that is used to prepare the air in a pneumatic system.

A sample exam for DC/AC I, unit # 12 is presented to the students. This unit covers transformers.

In this learning activity you'll explore units of measurement.

In this learning activity you'll demonstrate how to use unity fractions to complete conversion calculations.

The student reviews the roles and responsibilities of the President and takes a quiz.

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

In this learning activity you'll read introduction to electrical quantities, units, and symbols and test their knowledge in a matching exercise.

In this interactive object, students answer 10 questions covering Ohm's Law and Power Law.

In this interactive object, learners answer nine questions about inductors.

In this interactive object, learners work 11 problems covering atomic structure, conductors, and insulators.

Learners view images of the presidents of the United States and click on the name of the president shown.

Learners answer six questions about transformers.

In this interactive object, learners work 10 problems covering resistors, voltage, and current.

In this interactive object, learners answer nine questions about series and parallel circuits. Immediate feedback is provided.

Learners answer eight questions about capacitors. Help pages are available.