In this animated lesson, learners read about the disulfide bond, the second strongest chemical bond in the hair. This bond can only be altered by chemicals.

In this animated object, students examine the steps for wiring an electrical circuit from reading a schematic diagram.

In this learning activity you'll explore how an Exclusive-OR gate operates by using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

Learners examine how air-to-open valves and air-to-close valves are used in different situations. A brief quiz completes the activity.

Learners test their spelling ability by identifying misspelled words from lists of words commonly used in business.

Students view drawings of the dc analysis of a voltage-divider biased NPN transistor.

Learners view the operation of a full-wave rectifier which has two diodes.

In this learning activity, we’ll explore how async and await is used in mobile programming to allow multiple tasks to happen at once.

In this screencast, learners examine the internal elements of a 555 IC and their operation.

The learner will understand how to use a cause and effect diagram to find the root cause of a problem.

In this learning activity, you'll explore what malware is, what the different types of malware are, and how you can protect your computer from these threats.

Learners examine the accounting equation and classify accounts into the appropriate categories in drag-and-drop exercises.

Learners examine the different stages of maturation for red blood cells, white blood cells, and platelets. A quiz completes the activity.

A human skeleton test will be taken by students. They will need to label all bones of the skeleton.

In this learning activity learners will be hear about aspergillus found on marijuana and the potential health hazards that can affect a property room manager. Learners will hear about preventative measures.

Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.

Students answer 10 questions in a sample exam. This exercise covers number systems, number conversion, logic gates, and combinational design. Feedback is provided.

The learner reads about safety considerations for operating a hydraulic metal shear. Text, graphics and a brief assessment are included.

Learners answer 20 questions related to a customer's blood alcohol content. The questions are presented in a game show format, and immediate feedback is provided. A final score is given at the end of the activity.

In this animated activity, learners examine the conversion of electrical energy into an electrostatic charge within the dielectric material of a capacitor.

In this learning activity you'll identify the voltage levels produced or recognized by digital logic devices as valid or invalid logic state signals.

Learners read how the NOR gate can be configured to obtain the other common logic gates. Schematics and Boolean expressions demonstrate how the AND, OR, and Hex Inverter functions are achieved through the use of only NOR gates

In this animated object, learners observe the changes inside the DC shunt motor that could cause the motor to break apart when its field coil opens. A short quiz completes the activity.

Learners view an animation showing the one-shot operation of a programmable logic controller.

Students view how the tool length offsets are set on the CNC Machine. They read a description of a method that uses a 2-inch gage block as a height reference.