Polarity Path

Play signed cards to hop your pawn along the number line: minus cards move left, plus cards move right. Land on the target exactly to win. Avoid hazard tiles, and beware mirror tiles, landing on one flips the sign of your very next jump, turning a planned left into a right. You have a limited hand, so reach the target before you run out of cards.

• Negative cards jump left, positive cards jump right.
• Landing on a mirror tile flips the sign of your next jump.
• Hazard tiles must be avoided, don't land on them.
• Hit the target exactly before your cards run out.

• Daily: the same course for everyone, in Easy, Medium, or Hard.
• Practice: fresh random courses at your chosen difficulty.

• Desktop: click a card to play that jump; Undo and Restart are available.
• Phone & tablet: tap a card to make the jump, tap Undo to take it back.

• Account for mirror tiles in advance, a jump that crosses one effectively reverses your plan.
• Add up your remaining cards' net value to check you can still reach the target.
• When a hazard sits between you and the goal, sequence your jumps to leap over it, not onto it.

Polarity Path builds fluency with signed numbers and integer addition by turning the number line itself into the board you move along.

• Skills: integers and signed numbers, integer addition and subtraction, the number line
• Best for: roughly grades 6–8 (ages 11–14)
• For parents & teachers: makes negative numbers a place you move, not a rule to memorize.

Hopping along a number line with signed cards, minus moving left and plus moving right, is the standard model for adding integers.

The original twist is the mirror tile, which flips the sign of your next jump — turning a planned left into a right.

That is a neat dramatisation of multiplying by −1. Negation is not a movement but a reversal of direction, and a tile that changes what your next card does, rather than where you currently are, keeps that distinction intact.

Polarity Path is an original, free browser puzzle that builds fluency with signed numbers and integer addition by turning the number line into a board to navigate. No install required.

A free, original browser game on PlayPendium. No download, no install.