How to Teach Computer Science

How to Teach Computer Science

It’s here! HTTCS the podcast. Listen to extracts from the book ”How to Teach Computer Science” read by me, the author Alan Harrison. I’ll discuss the thinking behind the content, bring it up to date with the latest news and research and help you understand how to use the knowledge in your classroom. See for more info.


May 26, 2024 39 mins

The concluding part of my chat with David Morgan aka "The Lesson Hacker". We talk AI-drawn Labradors with two tails, AI failing to get Star Trek uniforms right, and the end of the costume rental industry! We also talk about important stuff like adaptive teaching and personalised learning. 

Transcript at

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David Morgan of Craig'n'Dave and Mindjoy joins me to talk about the future. Apparently it's here already, who knew? Personalised teaching bots, the history of cheating and how to become a "10x teacher". We talk ChatGPT, and making our own PRIMM bot. We bond over Microsoft Encarta and a shared dislike of differentiated worksheets (*shudder*). This episode features the phrase "I spent the weekend making a semantic waves bot",...

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April 20, 2024 48 mins

One of the best known creators of computing education content, one half of Craig'n'Dave, Dave Hillyard, joins me to talk about Hungarian Dancers, Snakes and Ladders and the day we did a "collab". It's abstractions all the way down in this epic that you must listen to if you teach algorithms.

Transcript on my blog at

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April 11, 2024 49 mins

Rachel Arthur from Teach First joins me to talk all things Initial Teacher Training. We discuss the joys of teaching computing, routes into teaching, what to expect from your placements and why we need more recruits for the robot apocalypse! And find out if Rachel and I are even human or perhaps just deepfakes. Confused? You will be in Episode 7!

Transcript at

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March 28, 2024 50 mins

Miss Tough joins me to discuss exam preparation: revision techniques, retrieval practice, making mind maps (or not!) answering exam questions. Playing Taboo! and corny computing jokes. I tell you what happened in the 80s when I swung on my chair and we discuss teacher cliches like "it's your own time you're wasting!"

Transcript on my blog at

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March 16, 2024 41 mins

I meet the teenagers behind "Mission Encodable", a Python tutorial website, hear their stories of learning to code and why they made the product. I reminisce about my classroom days when I wrote "10 PRINT "MY TEACHER IS AN IDIOT" / 20 GOTO 10" and I share a promo code for my books and more at

Mission Encodable is here 

The full Transcript is here and my podcast page is at pod.httcs.onli...

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March 7, 2024 43 mins

In this episode I explore pedagogy, the art of teaching, with the help of highly experienced computer science teacher Andy Colley. We talk explicit instruction, cold calling, checking for understanding, PRIMM and much more, and agree that lots of computing-related jokes are not very funny. I wrestle with a printer and Andy goes off on a tangent more than once. A bumper 43-minute episode you cannot miss!

Transcript here: httcs.onlin...

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What have Braille and Burger Emojis got in common? I take a deep dive into the subject of Data Representation with the help of my special guest Andrew Virnuls of, we demystify binary, bit depth and sample rate, talk about cross-stitching, and I reveal the winners of recent competitions! 

Transcript at If you enjoyed this episode, buy me a coffee at or buy my books at httc...

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How to Teach Computer Science episode 2, "What IS Computer Science", in which I attempt to cover the whole spec in 30 minutes, from Data Representation through Programming and Algorithms to Issues and Impacts: a whistle-stop tour of the core and hinterland.

Transcript at

Full episode list at

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Hello and welcome to "How to Teach Computer Science", the podcast. I've had a lot of people say to me, Alan, your book has been recommended to me and it looks fantastic, but I just don't have time to read it. So if that was you, here it is. Here's the pod..  And welcome to the opening episode. There are jokes, a competition and lots of pedagogy.

Transcript is available on your podcasting app and on my blog here

All episodes can be ...

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