POLARITY
A neon vector shmup where the ship's sign is the arithmetic. A Seal Bearer holds a problem on its hull and drops four orbs; an orb whose sign is not yours is a ghost you fly through, one of your own sign is solid and commits you. Read, pick a polarity, thread the mines.
Addition & subtractionEquality & algebra
The pack suggests age 9 and up. The difficulty itself follows the player, not the age.
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What it covers
POLARITY draws its questions from these parts of the curriculum. Which of them a player sees, and how hard the questions are, follows the player.
Addition & subtraction
- Column addition without regrouping
- Column subtraction without regrouping
Equality & algebra
- Finding a missing addend
- Finding a missing subtrahend
- Finding an unknown minuend