Reading the Tape Measure
Like Duolingo, but for Reading the Tape Measure. 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.
A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through See the Lines Without Doing Math and Physical Hacks and Zero-Math Shortcuts. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Reading the Tape Measure
- Line heights on a tape measure directly communicate the fraction group of each mark
- Every mark of a specific fraction size shares the exact same height across the blade
- The full inch marks are the tallest lines extending across the blade
- The second-tallest line directly centered between two whole inch marks is always the half-inch
- Each reduction in line height cuts the fractional increment in half
- The hierarchy runs smoothly from whole inch down to sixteenths by height tiers
- A quarter-inch mark is visibly shorter than the half-inch line next to it
- A quarter-inch mark stands noticeably taller than the eighth-inch ticks flanking it on either side
- The half-inch line acts as a reliable middle landmark (4/8 inch)
- Reading one eighth forward from the half-inch immediately gives 5/8 without starting from 7 inches
- Quarter-inch lines divide the inch into four equal sections
- Quarter marks are the third-tallest lines on the blade, shorter than the half-inch line
- Thinking of quarters like pocket change gives instant landmarks across the inch
- Every even numerator reduces to a larger division (e.g., 6/8 reduces to 3/4)
- Every marked fraction you call aloud on a tape measure uses an odd number on top
- Longer tick marks on the blade always absorb the even fractions
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 Reading the Tape Measure 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.
What is true about every mark of the same fraction size across the tape?
Get it right to open this lesson and 11 more in the app.
Where Reading the Tape Measure takes you
Never struggle with tiny tick marks or fraction math again. Learn the visual secrets, line patterns, and built-in tool tricks that let you measure anything with instant confidence.
- 1
See the Lines Without Doing Math
- The Secret Ladder of Line Heights
- Calling Out Fractions by Sight
- 2
Physical Hacks and Zero-Math Shortcuts
- The Hidden Features of the Blade
- Measuring Tricks That Skip Math Entirely
2 sections · 4 units · 12 levels. Built to play, not to enroll.
You pick the voice
Reading the Tape Measure 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.
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Start Reading the Tape Measure today.
Download Tomo, search Reading the Tape Measure, and play your first lesson in under a minute.