Number Line Hop is a free number line game for kindergarten to 2nd grade. The river is a number line from 0 to 20, and each round is one walk along it. Every problem starts where the fox is standing, so 6 + 3 takes him to 9, and the next problem starts from 9. Your child taps the stone where he will land, and he hops there one stone at a time. Every walk ends on 20, where a friend is waiting to be rescued. There are 17 friends to rescue, one at each stop on the map.
How it teaches
The number line is straight and evenly spaced, with every number from 0 to 20 on it, so the distance the fox hops is the number being added or taken away.
The fox only ever moves by hopping along the line, so the line is always the thing doing the maths. Adding is hopping up (counting on), and taking away is hopping back (counting back).
A wrong tap is shown, not hidden: the fox hops to the stone your child picked, it turns red, and he hops back to try again. After two misses the right stone glows.
The 10 stone is gold. When a jump crosses 10, the fox pauses on it for a moment, which shows how 8 + 5 breaks into 8 + 2 + 3, and 13 − 5 into 13 − 3 − 2.
Children who can't read the numbers yet can switch on "Read to me", and a teacher's voice reads each problem. The speaker button reads the problem once at any time.
The 17 stops
Stops 1 to 5 hop up by 1, 2 and 3 (counting on, kindergarten and early 1st grade). Stops 6 to 10 hop up and back by up to 5 (counting back, 1st grade). Stops 11 to 17 make bigger jumps across 10 in both directions (1st and 2nd grade). The first stop of each group is always open, so an older child can start where they need to.
Stop 1: rescue Kate the squirrelUp 1
Stop 2: rescue Jane the pandaUp 2
Stop 3: rescue Hope the ponyUp 1 or 2
Stop 4: rescue Nan the rhinoUp 3
Stop 5: rescue Tam the zebraUp 1, 2 or 3
Stop 6: rescue Pip the pigBack 1
Stop 7: rescue Chip the chipmunkBack 2
Stop 8: rescue Len the raccoonUp and back 3
Stop 9: rescue Chad the badgerUp 4 and 5
Stop 10: rescue Chuck the woodchuckUp and back 5
Stop 11: rescue Glen the fawnUp across 10
Stop 12: rescue Jim the mouseBack across 10
Stop 13: rescue Ken the koalaAcross 10 both ways
Stop 14: rescue Ned the bear cubUp 6 to 9
Stop 15: rescue Scout the lion cubBack 6 to 9
Stop 16: rescue Stan the rabbitBig jumps
Stop 17: rescue Sam the lambAnything to 20
For parents and teachers
It runs in the browser on tablets, phones, Chromebooks and computers. Nothing to install.
No ads, no sign-up and no accounts. Progress is saved only on the device you play on.
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