Thinking Like a Historian
Move beyond memorizing dates and discover how historians piece together the truth about the past. Learn how to interrogate biased documents, untangle messy causes, and spot when historical claims are being weaponized.
Like Duolingo, but for Thinking Like a Historian. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
23 levels across 4 sections, about 46 minutes end to end, roughly 9 days at five minutes a day. It moves through Investigating the Evidence, Piecing Together Conflicting Accounts, Explaining How and Why Things Change, and Navigating How History Is Told and Used. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Thinking Like a Historian
- Primary sources are everyday leftovers like letters, bills, and diaries created to solve immediate practical problems
- Most people in the past did not create records thinking about how future historians would read them
- Treating a primary source as an objective historical summary misinterprets why it was made in the first place
- Writers rarely record the things they take entirely for granted in their daily routine
- Omissions in a historical record often mark what was common, free, or obvious to the creator, not what was absent
- A document often reveals more about past daily life through accidental clues than through what it meant to say
- Who created a record dictates what kind of information they were in a position to know or want to show
- The purpose and audience of a document limit what it can reliably prove to a historian
- A source created long after an event reveals later political messaging better than it reveals original battle details
- Expensive materials like fine parchment, clean paper, and dark ink signaled wealth and institutional power in past eras
- Phonetic spelling and makeshift materials like scrap paper typically reflect everyday working people rather than formal elites
- The physical condition and material form of a document reveal social standing before reading a single word
- Historical sources are rarely purely objective descriptions of reality
- An author's prejudice or hostility reveals what that society valued, feared, or wanted to justify
- Historians do not discard biased documents; they shift the question from 'is this true?' to 'what does this reveal about the writer?'
- Private diaries capture raw anxieties, unvarnished reactions, and personal motives
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 Thinking Like a Historian 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.
When people in the past wrote letters or kept account books, who were they usually writing for?
Get it right to open this lesson and 22 more in the app.
How to learn Thinking Like a Historian, step by step
Go in order. 23 short levels across 4 sections, about 46 minutes in all, five minutes a day.
- 1
Investigating the Evidence
- Interrogating a Firsthand Clue
- Sifting Sincerity from Self-Interest
- 2
Piecing Together Conflicting Accounts
- Reconciling Contradictory Testimonies
- Seeing the World Through Past Eyes
- 3
Explaining How and Why Things Change
- Untangling Causes from Triggers
- Spotting Continuity Beneath Disruption
- 4
Navigating How History Is Told and Used
- Why Every Generation Rewrites the Past
- Detecting When the Past Is Weaponized
4 sections · 8 units · 23 levels. Built to play, not to enroll.
Questions about Thinking Like a Historian
How do I learn Thinking Like a Historian?
Go in order: start with Investigating the Evidence, then Piecing Together Conflicting Accounts, then Explaining How and Why Things Change, then Navigating How History Is Told and Used. On Tomo that's 23 short levels, about 46 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Thinking Like a Historian?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Thinking Like a Historian is one of its free courses, and you can type any other topic to get a course of your own.
Is the Thinking Like a Historian course free?
Yes. Thinking Like a Historian is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Thinking Like a Historian?
23 levels across 4 sections, about 46 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Thinking Like a Historian?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Thinking Like a Historian is taught in 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.
More History on Tomo
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History is not a list of names and dates to memorize, but an ongoing detective story about how our world came to be. Learn how to interrogate sources, puncture popular myths, and understand the real forces driving human events. Walk away ready to critically assess any historical claim you encounter in books, news, or museums.
Thinking Like a Historian
Transform how you see the past from a list of memorized dates into an active detective case. Learn how to interrogate old clues, spot hidden biases, and uncover why major events really happened.
How to Think Like a Historian
Move beyond memorizing dates and discover how historical knowledge is actually constructed. Learn to interrogate biased sources, read between the archival lines, and weigh competing interpretations to uncover the past with critical rigor.
Thinking Like a Historian
Learn how to read past events critically, dismantle common myths, and investigate the evidence behind historical claims. Master the tools historians use to separate fact from propaganda, uncover missing voices, and understand why the world became what it is today.
Start Thinking Like a Historian today.
Download Tomo, search Thinking Like a Historian, and play your first lesson in under a minute.