In this interactive object, learners answer questions about doing research on the Internet.

In this learning activity you'll examine how a data file is broken into packets and transmitted over the Internet.

In this learning activity you'll explore the IPv4 IP address scheme and the planned conversion to IPv6.

In a series of interactive exercises, learners identify the parts of a URL, a Web site, and an e-mail memo. Students are given their score at the end of the activity.

Students read an explanation of power factor in a power distribution and how it can be improved by using a power factor correction capacitor bank. A brief quiz completes the activity.

Learners read and listen to the pronunciation of hundreds of medical terms that are arranged in a "jukebox." The terms are listed alphabetically and according to the following categories: aerobic and anaerobic microorganisms, blood bank, coagulation, fungi microorganisms, hematology, protozoa, and urinalysis. This learning activity requires a computer that is equipped with speakers.

In this learning activity you'll examine a stateful packet inspection firewall that keeps track of legitimate Internet service requests, also known as dynamic packet filtering.

Learners watch a video of a walk around inspection of a rough terrain lift truck from front to rear. Note: This object contains video clips. High-speed Internet is highly recommended.

Learners examine a bank statement and a reconciliation form and study how to balance a checking account.

In this learning activity you'll examine how routers transfer data between local area networks and the Internet.

Learners examine the do's and don'ts of blogging in a school setting. They compare the features of a student blog with those of a classroom community blog. This learning object is particularly designed for instructors.

Learners test their knowledge of jurisdiction issues by matching case scenarios to the correct court. The cases involve the following courts: Circuit, Small Claims, Probate, District, Bankruptcy, State Appellate Court, Wisconsin Supreme Court, and U.S. Supreme Courthouse.

In this interactive lesson, learners read and hear instructions for sending an e-mail. Steps are given for composing an e-mail message and for sending it. Students have an opportunity to write their own messages. A quiz follows the instruction.

Explore what DDoS attacks are, the methods used to carry them out, and how to prevent them.

In this learning activity you'll explore what a denial of service attack is and learn how a single hacker can take down an entire system.

In this learning object, students will learn about the attachment

process of specific sugars to red cell membranes and how the sugars

determine ABO antigenic activity.