🛠️ Builders · Ages 11–14

How Machines Learn

Discover what data really is, build decision trees, train and test a classifier, tune an artificial neuron and watch an agent learn by trial and error.

📚 5 lessons 62 min 380 XP

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Lessons

1📊Data: the fuel of AIFeatures, labels, and the three ways machines learn.⏱ 12 min✨ 70 XP
2🌳Decision treesTwenty questions, but learned automatically from data.⏱ 11 min✨ 70 XP
3🎯Training and testingWhy memorizing isn't learning, and how we check a model fairly.⏱ 13 min✨ 80 XP
4⚡Artificial neuronsMultiply, add, decide: the tiny unit behind all neural networks.⏱ 14 min✨ 80 XP
5🐭Learning by trial and errorAgents, rewards and the art of exploring: reinforcement learning.⏱ 12 min✨ 80 XP