Learners answer questions about nonferrous metals and alloys using a game show format. Immediate feedback is provided.

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

This animated lesson shows the operation of timer-on and timer-off delay relays used in ladder circuit operate.

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.

Students read the rules used in multiplying and dividing signed numbers. They view examples and work practice problems.

Students read how to organize their work when multiplying more than two signed numbers. A review and practice problems complete the activity.

Learners follow the steps for adding and subtracting signed numbers and complete practice exercises.

Learners view a vector diagram for a series RC circuit and read information concerning the voltage across each component, the total voltage, and the phase angle.

Learners read about the vector diagram for a parallel RL circuit. This animated lesson presents information on current flow through each branch, total current, and phase angle.

Students will work on subtraction skills without regrouping

Finde die richtige Zahl. Was passt zusammen?

Asocia los números con su forma escrita.

4659 writing out numbers