Hello World issue 20

“Have you tried switching it off and on again?” “The Wi-Fi must be down!” “How come I can’t see the cloud up in the sky?” Computing systems and networks is one of those computer science topics in which misconceptions abound, and learners can struggle to grasp its abstract concepts. This issue offers ideas and inspiration for unpacking those tricky concepts with your learners. We discuss the research into different approaches to teaching networking, before seeing some of those methods in action. We explore the merits of inviting a network manager into your classroom, profile a number of different network simulator tools, and delve into ways to make networks concrete for primary learners.

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The magazine, published three times per year, is available entirely free as a Creative Commons PDF download. You can also buy the magazine in print, or subscribe for a year. Thanks to the generous support of our sponsors, Hello World is available free of charge, in print, for UK-based educators.