If it's on the Internet, it must be true—right? How can someone tell if a website contains less-than-truthful information? Savvy surfers evaluate sources in the fifth of a six-part college and career readiness instructional activity...

Here's a project with practical applications for homes with a wireless network. This project shows you how to build and test parabolic reflectors for the transmitters on your network. You may be able to increase the range of your...

Steiner trees are another way to approach finding efficient networks between points. This is another tough problem from computer science, converted into an activity which is easy to explain, with variations suitable for higher-level...

Learn about the many protocols that power the Internet, and how each protocol operates at a different layer, building functionality on top of the layer below it.

Students learn what information makes up a protocol for bits of information added to messages to make sure they are sent over the internet.

Learn about the internet, the world's largest computer network.

Learn that the internet is a network of computers connected to each other. But what does each physical connection look like? It depends on the needs of the connection and the size of the network.

This puzzle shows students the decisions involved in linking a network between houses in a muddy city. It can lead on to a discussion of minimal spanning tree algorithms for optimizing networks.

Learn about IP packets in computer networking.

Practice problems with the internet protocol suite of networks.

Practice problems to help understand scalable network systems.

Learn how computers split messages into packets and those packets hop from router to router on the way to their destination.

Check your understanding of IP addresses (v4 and v6), in this set of free practice questions designed for AP Computer Science Principles students.

Check your understanding of the DNS (domain name system) and DNS spoofing, in this set of free practice questions designed for AP Computer Science Principles students.

Check your understanding of HTTP requests and responses, in this set of practice questions designed for AP Computer Science Principles students.

An article about the development of the Internet by Vinton G. Cerf. Includes a short biography of his career.

Explore how binary information is sent and how quickly they can be sent.

Learn how social media impacts our use of technology.

Learn about rogue access points to understand wireless internet access.

Learn about the features that increase the scalability of the Internet.