Learners examine how the National Debt occurs and trace its history from the time of the Revolutionary War through the present.

In this learning activity you'll read about the history of one of the world's newest nations and test their knowledge with a short quiz.

In this interactive object, learners change the amount of money received from tax revenue and the amount spent on federal programs as they calculate how fiscal policy affects the gross domestic product (GDP), unemployment, inflation, the annual deficit, the national debt, and interest on the national debt.

Learners view an animated demonstration of how to determine the final output of the combinational circuit.

In this learning activity you'll discover different communication styles from around the world.

In this screencast, you will learn about the 24 time zones.

In this interactive object, learners examine how hydraulic oil is contaminated, the types of damage contamination can cause, and the methods used to clean the oil.

In this learning activity you'll test your ability to select the proper gage blocks when making a stack.

In this interactive object, students view the various positions used during medical examinations. They then match the names of the positions with the correct images and with their descriptions.

In this learning activity you'll calculate exchange rates to determine the impact of prices of exports and imports.

This learning object is designed to assist students in understanding and interpreting collision evidence found in automotive lamps. In particular, the concepts of Hot Shock, Cold Shock, Hot Break, and Cold Break will be visually addressed.

In this learning activity you'll determine appropriate feasibility studies from a list of selected topics.

In this learning activity you'll demonstrate the magnitude of Gross National Product.

In this animated and interactive object, learners view American National Standard and International Standard sheet sizes. A quiz completes the activity.

Learners use the National Electrical Code to determine the size of a motor overload protection device.