In this animated activity, the learner examines how a 74150 IC multiplexer and a 74154 IC demultiplexer work together when their data select lines are connected to the same input devices.

In this interactive object, learners read a description of value-added and non-value-added activities and then place various work duties into these two categories.

Learners test their ability to visualize a mounting wedge in this interactive exercise that features animated pictorial views.

In this learning activity you'll explore the operation of a NAND gate using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

Students review the best practices for using a ruler and answer five basic questions.

Chapter 1 Science Vocabulary.

The learner will identify and measure common structural materials used in metal fabrication.

You'll practice converting units of measure for area in the metric system.