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What we are building next.
Every lesson is free to read today. Nothing below is for sale yet. If one sounds good, tap it and leave your email; we'll write to you when it's ready. We never ask for payment details.
OneLongTail Unlimited
Every lesson and every exercise, with no daily limit. New lessons as they land.
The Long Tail of Science
A timeline poster of the history of science: 42 eras, five branches, one long tail. Print-ready PDF.
OneLongTail AI Tutor
Unlimited interactive practice inside your AI assistant (works with Claude): ask, guess and practise any lesson in chat.
The Daily Wow
One surprising math or logic puzzle in your inbox every morning, with the answer and the story behind it the next day.
Wow Math: 100 Puzzles
100 classic math and logic puzzles in large print, each with a full worked answer. Printable PDF.
Wonder Together
A weekly science and math activity for a grandparent and a grandchild (ages 7–12) to do together, in person or on a video call.