In this interactive object, learners test their knowledge of 14 geometric tolerance control symbols.

In this interactive object, learners examine standard and metric thread specifications used in engineering drawings. In a brief quiz, they identify various internal and external thread representations.

Convert one unit to another unit using the metric system.

Students identify the parts of a triple beam balance and practice measuring the mass of objects.

The learner will measure and record dimensions using a metric micrometer to an accuracy of plus or minus .01 of a millimeter.

In this learning activity you'll explore public key encryption and conclude with a short quiz.

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

Units and instruments

In this learning activity you'll evaluate the six trig functions using a scientific calculator.

Learners examine the proper way to set up standard and metric micrometers to measure the wear on a brake drum.

In this learning activity you'll review how to read a metric micrometer and use your knowledge to answer 12 questions.

You'll practice converting between units of measure for volume in the metric and English measurement systems.

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

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

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

You'll practice finding values of trigonometric ratios of given angles and of angles having the given trigonometric ratios.

You'll practice converting between units of measure for area in the metric and English measurement systems.

You'll practice converting between units of measure for weight in the metric and English measurement systems.

You'll practice converting between units of measure for length in the metric and English measurement systems.

You'll practice converting between units of measure for length, mass, and capacity in the metric system.