Think it through first
Start here
Measure Lab Read an object’s length off a ruler — including the tricky “broken ruler” where you subtract instead of reading the end.
Angle Lab Read angles on a protractor and beat the double-scale trap — check acute-or-obtuse first; a hint waits after a miss.
Volume Lab Count unit cubes to find a box’s volume — then untangle volume from capacity.
Measure Duel A head-to-head kit round for 2–4 players — one device or an online room by code. Highest first-try score wins. How are you feeling?
All activities
Measurement labs
Measure Lab Read length off a ruler, including the broken ruler where you subtract instead of reading the end. Convert Lab Step the metric staircase and swap customary units — multiply going down, divide going up. Balance Scale Load unit weights until the scale balances — feel why 1 kg = ten 100 g weights. Area & Perimeter Builder Count square units for area and edge units for perimeter — then solve which shape holds the most space. Angle Lab Read a protractor and beat the double-scale trap; check acute-or-obtuse first. Volume Lab Count unit cubes for a box’s volume, then untangle volume from capacity. Data Studio Read bar graphs; find mean, median, mode and range; tally your own shapes into a graph and read it. Estimation Station Place a value on a tick-free number line, lock in your guess, and see how close you got.
Practice & play
Concept Kits 16 quiz kits · 400 questions — from reading a ruler to statistics, with a hint after a first miss. Mixed Practice Shuffles questions across the kits you’ve learned and brings them back when they’re ready to review. Measure Duel A head-to-head kit round for 2–4 players; take turns on one device or join a friend by room code. No chat, no accounts.
For grown-ups — progress report →
Cast, stories & more
More ways to play
Same idea, another world
😄 Brain break
Meet the cast — the characters who teach this
-
Rod Linear measurement -
Tile Area -
Cup Volume and capacity -
Tick Time -
Pace Unit conversion -
Bevel Angle -
Degree Temperature -
Tare Mass and weight -
Thumb Estimation -
Whisker Uncertainty
Ensemble stories — the cast together
What next? Pick a door
- More like this GeometryForge What do the angles add up to? FunctionForge What rule is the machine using? EquationQuest What keeps both sides balanced?
- A bit harder FractionForge Which fraction is bigger? CardForge How many ways can these cards combine? MintForge How does interest grow your money?
- Something different HeatForge How does this heat travel? LogicQuest Which fallacy is this? PastForge What caused this to happen?