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Start with a five-minute lesson a day for students aged 13–18. Look up words in AI Words, pick up habits in Studying with AI, and go deeper with the AI History Module and the Part Reviews.
Today's lessonPart 5: Looking Inside · DAY 46 · Oct 22, 2026
What's inside an AI if you open it up? — Neural networks
One dot can only multiply and add. Stack them in layers, and out comes judgment.
5 minExperiment · Put it in orderQuiz · 3Slides PDF
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One opens every day. Next: DAY 47 · Where should a word look to get its meaning? — Attention, Oct 23, 2026.
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Solid tiles are open lessons; the dashed tile opens next. Every lesson has one experiment, three quiz questions graded on the spot, and slides as a PDF.
Part 1: What AI Is
DAY 01–10 · 10/10 openDAY 01 · OpenHow does AI talk?DAY 02 · OpenWhat's a token, the 'piece' AI talks in?DAY 03 · OpenWhy does AI answer differently every time?DAY 04 · OpenWhat does it mean for AI to 'learn' something?DAY 05 · OpenJust how big is this number? — Getting a feel for parametersDAY 06 · OpenWhy does AI calmly make up facts? — HallucinationDAY 07 · OpenWhy does AI forget what you just said? — Memory limitsDAY 08 · OpenWhy does changing one question change the whole answer? — PromptsDAY 09 · OpenIs a bigger model always better? — Big models, small modelsDAY 10 · OpenCould this AI fit on my laptop? — Open and closed models
Part 2: How We Got Here
DAY 11–20 · 10/10 openDAY 11 · OpenWhere did AI start? — 1958: the neuron that learnsDAY 12 · OpenWhy did AI freeze over twice? — Two AI wintersDAY 13 · OpenOne photo contest flipped the whole game — 2012: deep learning comes backDAY 14 · OpenThe words in a sentence started looking at each other — 2017: the TransformerDAY 15 · OpenWhy did just making it bigger give it new skills? — 2020: GPT-3DAY 16 · OpenA chat window, not the model, changed the world? — 2022: ChatGPTDAY 17 · OpenWhy write out the work instead of answering right away? — Thinking before answeringDAY 18 · OpenIs grabbing a calculator when you don't know the smarter move? — AI that uses toolsDAY 19 · OpenHow do photos and sounds get to stand next to words? — AI that sees and hearsDAY 20 · OpenWhy are there so many AIs you can use now? — Everyone's model race
Part 3: What It Can Do
DAY 21–35 · 15/15 openDAY 21 · OpenWhen AI squeezes 20 pages into three lines, what does it throw out? — SummarizingDAY 22 · OpenWhy is 'You're taking my hair' a mistranslation? — TranslationDAY 23 · OpenWriting homework: how much do you hand over, and where do you take over? — Writing helperDAY 24 · OpenIf code comes out when you describe it, why doesn't it end there? — CodingDAY 25 · OpenThe more detail you give, the more the picture looks like your idea? — Making picturesDAY 26 · OpenHow many dots are in one second of video? — Making videosDAY 27 · OpenHow does your phone write down what you say? — VoiceDAY 28 · OpenSearch box vs asking AI: what actually changes? — How is it different from search?DAY 29 · OpenResearch for a graded class project: how much can you hand to AI? — ResearchDAY 30 · OpenStuck on a problem: get just the answer, or the steps? — Study helperDAY 31 · OpenTurning 100 survey sheets into a graph: what comes first? — Tables and dataDAY 32 · OpenPresentation prep: which parts are AI's, and which are yours? — Preparing a presentationDAY 33 · OpenWhy are some answers boring and others off-the-wall? — Coming up with ideasDAY 34 · OpenYou've got a big job: where do you even start? — Making a planDAY 35 · OpenIf it can finish a job on its own, how much can you hand it? — Handing over a whole task
Part 4: What to Watch Out For
DAY 36–45 · 10/10 openDAY 36 · OpenIs it OK to put this into AI? — Protecting your informationDAY 37 · OpenWhy did the meaning of "copying" get shaky? — CopyrightDAY 38 · OpenIs this video real? — DeepfakesDAY 39 · OpenIs someone missing from this answer? — Bias in AIDAY 40 · OpenWhere did I stop and AI start? — Saying when AI made itDAY 41 · OpenIf AI does it all, what's left for you? — Homework and AI: where's the lineDAY 42 · OpenCan you trust this story? — Fake newsDAY 43 · OpenWhat if a call comes in your family's voice? — AI scamsDAY 44 · OpenHow much should you hand over? — Not leaning on it too muchDAY 45 · OpenDoes every AI follow the same rules? — AI has laws too
Part 5: Looking Inside
DAY 46–55 · 1/10 openDAY 46 · TodayWhat's inside an AI if you open it up? — Neural networks
DAY 47 · Next · Oct 23Where should a word look to get its meaning? — Attention
DAY 48 · Oct 24How does a computer understand the word 'apple'? — Meaning as numbers
DAY 49 · Oct 25Which of two sentences is closer? — Finding similar things
DAY 50 · Oct 26What happens when you ask AI something it doesn't know? — Open-book answers
DAY 51 · Oct 27Can you teach a fully trained AI one extra job? — Extra training (fine-tuning)
DAY 52 · Oct 28Given two answers, which one would a person score higher? — Humans scoring answers
DAY 53 · Oct 29How did graphics cards made for gaming become the heart of AI? — GPUs
DAY 54 · Oct 30How much electricity does it take to ask AI one question? — Data centers and electricity
DAY 55 · Oct 31Can your phone run AI all on its own? — AI on your phone
Part 6: What Comes Next
DAY 56–60 · 0/5 openDAY 56 · Nov 1Is AGI already here, or still far off? — The AGI debate
DAY 57 · Nov 2Will my job disappear completely? — AI and jobs
DAY 58 · Nov 3Who teaches AI to say 'no'? — AI safety
DAY 59 · Nov 4Which pieces of a robot have AI inside? — Robots and AI
DAY 60 · Nov 5So what should I get ready for? — The order of learning