The Thriving Three-Year-Old
Like Duolingo, but for The Thriving Three-Year-Old. 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.
18 levels across 3 sections, about 36 minutes end to end, roughly 7 days at five minutes a day. It moves through Scaffolding Sophisticated Play, Inquiry and Investigation, and Autonomy and Environment.
Free forever · No credit card · iPhone & Android

Key ideas in The Thriving Three-Year-Old
- Forced sharing creates a scarcity mindset and interrupts 'flow' states
- Visual timers provide an objective 'authority' that reduces power struggles
- Wait-lists validate the second child's desire while protecting the first child's autonomy
- Coaching must occur before the 'emotional flood' stage
- The script is a tool for the victim to find their voice
- Adults should hover at the 'elbow' distance
- Applying the shift from forced sharing to structured turn-taking
- Identifying the optimal moment to coach a boundary script
- Joint attention requires a shared external focus
- Toddler games rely on protoconversations
- Parallel play does not build collaborative pathways
- The task must have a clear success state
- Social continuity is maintained through mimesis
- Breaking the hidden rule collapses the social structure
- Designing activities that necessitate joint attention
- Interpreting non-verbal hidden rules
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 Thriving Three-Year-Old 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.
Why might a teacher use a visual timer instead of just telling a child their time is up?
Get it right to open this lesson and 17 more in the app.
Where The Thriving Three-Year-Old takes you
Move beyond basic childcare into advanced developmental scaffolding. Learn to design high-level cognitive environments and complex play-based inquiries for the unique 'three-year-old' brain.
- 1
Scaffolding Sophisticated Play
- From Parallel to Collaborative Play
- Deepening Symbolic Thinking
- 2
Inquiry and Investigation
- The Project Approach for Threes
- Advanced STEM Integration
- 3
Autonomy and Environment
- Designing for Executive Function
- Literacy as Communication
3 sections · 6 units · 18 levels. Built to play, not to enroll.
You pick the voice
The Thriving Three-Year-Old is taught in the The Professor style: clear, structured, thorough. 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 Thriving Three-Year-Old today.
Download Tomo, search The Thriving Three-Year-Old, and play your first lesson in under a minute.