Thinking Like a Historian
Move beyond memorizing dates and discover how to investigate the past like a detective. Learn to cross-examine primary sources, spot hidden gaps in the record, and understand why historical accounts keep changing.
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.
A short one: 9 levels across 2 sections, about 18 minutes end to end, roughly 4 days at five minutes a day. It moves through Interrogating the Evidence and Making Sense of Competing Stories. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Thinking Like a Historian
- A primary source records what someone experienced or wanted known, not necessarily what actually happened
- Eyewitnesses have limited viewpoints and can misremember, panic, or exaggerate in the moment
- Being physically present does not prevent a writer from having personal biases or reasons to lie
- Provenance means checking who produced a source, when, and who they were trying to influence
- A writer's public goals, such as selling land or courting investors, strongly shape what they emphasize or omit
- Private documents like personal diaries often reveal candid struggles that public promotional tracts deliberately hide
- Corroboration requires independent evidence from separate perspectives, not the same party repeating its own story
- Accounts from opposing sides or neutral bystanders that confirm an embarrassing or notable detail make it far more likely to be true
- Multiple documents that copy from a single official narrative do not count as independent confirmation
- Historical writers often reveal real conditions and behaviors accidentally while trying to make a completely different argument
- Complaints and prohibitions in historical sources reliably prove that the complained-about behavior was actually taking place
- Close reading distinguishes what the author wants you to believe (their moral argument) from what their anger accidentally documents (villager resistance)
- Elite structures and belongings were crafted from expensive, durable materials like stone and metals that survive weathering
- The everyday dwellings, tools, and clothing of ordinary people were made from organic materials like wood, thatch, and cheap cloth that decompose quickly
- Assuming surviving artifacts represent average life leads to a skewed picture favoring the wealthy
- State records were created to manage land, extract revenue, and enforce royal orders, not to document personal life
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.
Why might someone who was right there during a big event get the story a little wrong?
Get it right to open this lesson and 8 more in the app.
How to learn Thinking Like a Historian, step by step
Go in order. 9 short levels across 2 sections, about 18 minutes in all, five minutes a day.
- 1
Interrogating the Evidence
- Interrogating a Source on Sight
- Spotting What the Record Leaves Out
- 2
Making Sense of Competing Stories
- Seeing the Past on Its Own Terms
- Evaluating Conflicting Explanations
2 sections · 4 units · 9 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 Interrogating the Evidence, then Making Sense of Competing Stories. On Tomo that's 9 short levels, about 18 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?
9 levels across 2 sections, about 18 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 Explain Like I'm 5 style: no big words. promise.. 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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Stop accepting historical narratives at face value and learn to interrogate the past like an investigator. Discover how to cross-examine conflicting eyewitnesses, decode hidden biases in official records, and interpret historical decisions within their own era's worldview.
Start Thinking Like a Historian today.
Download Tomo, search Thinking Like a Historian, and play your first lesson in under a minute.