The Secret Life of Energy
Like Duolingo, but for The Secret Life of Energy. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free forever · No credit card · iPhone & Android

Key ideas in The Secret Life of Energy
- Energy is required to change an object from being still to moving
- A push from a new direction changes the object's path
- A change in speed is a visible sign that energy was transferred
- Moving objects don't just stop when pushed sideways; they redirect
- Recognizing that a change in motion is evidence of energy transfer
- Predicting the result of a push from a different direction
- The strength of a push determines how much energy is transferred
- The direction of a push determines if an object speeds up or slows down
- Mapping specific actions to their effect on an object's energy and motion
- Heat energy always moves from the warmer object to the cooler one
- Heat travels through solid materials via conduction
- Energy transfer continues until both objects reach the same temperature
- Energy moves from the hot end of an object toward the cooler end
- Difference in temperature triggers energy movement
- The direction of heat flow between objects of different temperatures
- Heat flow stops once temperatures are balanced
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The Secret Life of Energy the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If a toy car is rolling straight and you give it a quick push from the side, what happens?
Get it right to open this lesson and 25 more in the app.
Where The Secret Life of Energy takes you
Discover how energy moves through everything from your morning snack to the stars in the sky. Learn to spot the invisible forces that make our world go round.
- 1
Energy in Your Hands
- Making Things Move with a Push
- How Heat Travels Through Your Kitchen
- Building Your First Simple Circuit
- Why Some Things Sink and Others Float
- 2
The World Around You
- How Plants Eat Sunlight
- The Secret Path of a Raindrop
- Who Eats Whom in the Wild
- How Animals Survive the Winter
- Why the Weather Changes Every Day
- The Rocks Beneath Your Feet
- 3
Big Ideas and Tiny Parts
- The Tiny Building Blocks of Everything
- How Gravity Keeps Us on the Ground
- Our Place in the Solar System
3 sections · 13 units · 26 levels. Built to play, not to enroll.
You pick the voice
The Secret Life of Energy is taught in the The Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start The Secret Life of Energy today.
Download Tomo, search The Secret Life of Energy, and play your first lesson in under a minute.