For learners
See how it works, not just read about it.
Bright, animated lessons on machines, the body, science, money and data. You watch it happen, read it back in steps, then take a quick quiz. Made for curious kids and grown-ups.
Inside a lesson
Quiz · 3 of 10
Which part makes the gear turn?
- The spring
- The motor
- The wheel
Step timeline
What just happened, in order.
20s each
A quick, timed test.
Saved scores
Progress by subject.
One · Watch it happen
You don't imagine the parts. You see them move.
A gear turns, blood pumps, prices climb. Watching the thing itself explains more in three minutes than a page of description, and nobody has to guess what the words meant.
- Plays on its own
- Step by step
- No jargon
Two · Read it back
Then the same story, in steps.
Every lesson ends with a vertical timeline of what you just watched, written out one step at a time, plus the extra facts that never fit on screen. Missed a bit while it moved? It's right there.
- Step-by-step summary
- Extra facts
- Same lesson, no sign-up for the free ones
- 1. Intake
- 2. Compression
- 3. Power
- 4. Exhaust
Three · Prove it
Ten questions, twenty seconds each.
A timed quiz closes every lesson. It scores you the moment you finish and explains the ones you missed, so the answer you guessed on becomes the one you remember.
- 20 seconds a question
- Scored and saved
- 10 questions
Which stroke makes the power?
- Intake
- Power✓
- Exhaust
8 / 10
Four · Keep track
Your scores stay on your dashboard.
Which lessons you've finished, your average score, how you're doing in each subject, and every attempt you've made. Useful for a parent checking in, or a grown-up learning something new.
- Progress by subject
- Quiz history
By subject
Avg 8.2 / 10
Five · Take it with you
Keep any lesson as a file for $1.99.
One download opens in any browser and works offline — no app, no login at the classroom door. Handy for teachers, families, and kids who want to show a friend exactly how it works.
- Works offline
- $1.99 per lesson
- Anyone can buy one
Six · The price
Everything for $4.99 a month.
One trial day starts the moment you sign up, so you can look around first. After that it's $4.99 a month for the whole library, every quiz and your progress — stop any time.
- Full library
- All quizzes and scores
- Downloads $1.99 each
$4.99 / month
Not sure you're a learner?
You can also make your own lessons — describe what you want to teach, put your logo on it, and take it away. One account holds both.