Learners examine a table of common polyatomic ions. Eight examples are provided for practice.

Students view diagrams of nails and read the client's nail history. They then determine if the affected nail has a disease or a disorder and recommend salon treatment and home care.

Learners listen to a lecture given during the early days of nanotechnology titled, “There’s Plenty of Room at the Bottom.” Dr. Richard Feynman made the presentation to the American Physical Society on December 29, 1959. Animation makes this lecture fun to absorb.

Components and Operations

Learners read about how universities, government agencies, energy companies, and nanotech firms are working together to use nanotechnology to help produce clean water for consumption.

The learner constructs a nail and identifies the terms relating to the structures of the nail in a matching exercise.

Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.

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.

Learners examine a table containing the names of common cations and anions.

In this learning activity you'll explore the process that servers follow to take a name entered on a computer browser and convert it to an IP address.

This learning object offers a brief summary of the impact of nanotechnology on automobile tires. Learners look at the future of cars, especially the safety and future of automobile tires.

In this interactive object, learners view a mind map of the structural-functional Approaches and quiz themselves about the manifest and latent functions and the dysfunctions of social patterns.

Learners listen to an explanation of balance sheet basics for farm operations. They then determine how purchases should be listed in a farm record book and complete sample income and expense sheets.

In this animated learning object, students read about the backflow of contaminated water and how to prevent it.

In this interactive object, learners sort veterinary muscle function medications into categories.

The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.

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

In this screencast, the student will learn that regardless of the surface onto which a blood droplet is falling, the angle or velocity at which it does so, or the volume of the droplet, there are four distinct phases involved in the reaction of a moving droplet with impact against a surface.

In this learning activity you'll view a graphical layout of the transactional communication model.

In this animated activity, learners examine the construction of a binary counter using a JK flip-flop. The ability of the JK flip-flop to "toggle" Q is also viewed.