Students view the steps to follow to add complex numbers in Excel.

Learners read how to convert complex numbers to their polar equivalent in Excel.

This general shop safety test assesses the student's knowledge of acceptable safety practices associated with the machine shop.

Students view the steps for dividing complex numbers in Excel.

In this interactive object, learners read an explanation of the electrodes used for welding with the GMAW and FCAW processes. In two matching exercises, students test their knowledge of classification and specification numbers.

Students view the steps for multiplying complex numbers in Excel.

The learner practices Mandarin Chinese in this animated scenario at a fast food counter.

Learners solve word problems involving basic mechanical principles such as torque, horsepower, work, and power. Students who have problems with a particular word problem may try it again with a different set of numbers.

Learners read about lab equipment and basic safety measures. In a quiz, they view photos and determine if the lab technicians pictured are using safe practices.