Tape Measure Math
Like Duolingo, but for Tape Measure Math. 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: 9 levels across 2 sections, about 18 minutes end to end, roughly 4 days at five minutes a day. It moves through Blade Arithmetic and Fraction Speed and Layout Geometry and Tolerance. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Tape Measure Math
- The half-inch line stands taller than quarters, eighths, and sixteenths across standard blade layouts.
- Each halving of a fraction's value steps line height down by one tier on standard tape measure blades.
- Recognizing mark height reveals the denominator instantly without having to count individual ticks.
- The shortest graduation mark on a standard blade is only ever an odd-numbered fraction over 16.
- Even sixteenths always simplify to eighths, quarters, or halves, which are printed as taller marks.
- Counting only odd sixteenths skips every taller tick that already belongs to a smaller denominator.
- Reading backward from a strong landmark like 3/4 saves you from counting eleven individual sixteenths.
- Subtracting one sixteenth tick from 12/16 directly yields 11/16 without recounting from the whole-inch line.
- Quarter- and half-inch marks serve as visual anchors to read adjacent ticks in single steps.
- Each eighth-inch division on the blade visually contains exactly two sixteenth-inch intervals.
- Visualizing 5/8 as 10/16 lets you step forward one tick to reach 11/16 immediately by eye.
- Doubling the eighth numerator matches its exact position in sixteenth-tick spacing.
- The space between 1/2 (4/8) and 5/8 contains exactly one intermediate tick at the sixteenth-inch height.
- Height contrasts between surrounding lines remain readable even when lighting obscures fine blade print.
- Bracketing an unknown tick between two distinct taller lines identifies it as 9/16 without counting.
- Halving the whole number 7 yields 3 1/2 inches
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 Tape Measure Math 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 happens to graduation line height on a tape blade each time a fraction's value is halved?
Get it right to open this lesson and 8 more in the app.
Where Tape Measure Math takes you
Turn your tape measure into a visual calculator. Master rapid binary fraction reading, mental layout arithmetic, and structural spacing marks without counting tick marks.
- 1
Blade Arithmetic and Fraction Speed
- Reading Binary Fractions by Sight
- Mental Math on the Blade
- 2
Layout Geometry and Tolerance
- Modular Spacing and Baseline Precision
2 sections · 3 units · 9 levels. Built to play, not to enroll.
You pick the voice
Tape Measure Math 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 Tape Measure Math today.
Download Tomo, search Tape Measure Math, and play your first lesson in under a minute.