Fifteen minutes at bedtime.
Real calculus by spring.
A nightly ritual that teaches gifted little kids real calculus and physics — in the story they choose, in their own words, at their own rung.
It reflows to the screen. It never fakes a phone.
After six nights, a three-year-old can do this
Find the delta
“It grew by three.” She names change before she can spell it.
Judge a rate
Points at the faster marble and says why.
Say dy/dx
The instant rate — in her own small voice.
Teach it back
Explains it to Lume. Understanding, not memory.
One night, four moves
The same shape every night, so the child always knows what happens next.
Pick tonight's world
Dinosaurs, rockets, ponies — she controls the costume; we control the curriculum.
One idea, three beats
Watch it, bend it, name it. The concept never changes — only the story does.
Teach it back
She explains it to Lume. Two-of-three observed and the star lights.
It ends itself
A 15-minute ceiling and an off-screen mission for tomorrow. No cliffhangers.
Real terms. Stable notation. Never dumbed down.
Growing Sky · calculus
Why Lab · physics
Mastery is re-meeting, not repeating
A concept returns days later wearing a new costume. Five real meetings — spaced, varied, and taught back — before a star lights. No streaks, no timers, no drilling.
You wake up to what she actually learned
What she met: the derivative — the rate right now (dy/dx).
Word-for-word: “The dino goes fastest at the bottom of the hill!”
Today, off-screen (4 min): roll a ball down a cushion and ask where it’s fastest.
Not yet: naming it without the story. Returns in two nights, one rung lower.