In this interactive object, learners solve a series-parallel DC circuit analysis problem. Immediate step-by-step feedback is given.

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

This learning activity uses a water pressure analogy to present the concept that voltage pressure is required to cause current flow.

Learners study the operation of capacitive probe sensors used to measure levels in a tank.

In this animated lesson, learners follow the steps required to read the phase shift difference in degrees between two AC waveforms.

The schematic symbols of logic gates used in digital circuits are shown.

Students read information about basic logic gates including the gates' names, symbols, Boolean expressions, pronunciations, and truth tables. They then complete a matching exercise.

Learners examine the fundamental concepts of sequencer output instruction. A simulated example shows a sequencer in operation.

In this animated activity, learners examine how various NAND gate configurations and the logic signals produced throughout the circuit perform the functions of all of the other types of logic gates.

Angles, Triangles, Parallel Lines, Transversals

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Basic Math

You'll focus on terminology related to designing a hypothetical program.