How to play
A pirate's chest holds a number of gold coins. The captain takes some away (the animation shows the coins flying out) and you tap how many are left. Easy rounds use up to five coins; harder ones go to ten and add a hidden-coin twist where you have to count the missing ones. Correct answers fill in your treasure map, square by square, until the buried treasure is revealed.
What your child will learn
- Build subtraction fluency
- Understand take-away concepts
- Recognize subtraction as inverse of addition
Skills practiced
- Number sense
- Mental math
- Problem solving
Why this age range
Aimed at preschoolers (ages 4–5) because take-away subtraction within ten is a kindergarten-readiness skill. The game's gentle pace and lack of timing pressure suit the developmental window. Older children solve every problem instantly and lose interest within minutes.
Curriculum standards
- CCSS.MATH.1.OA.C.6
- CCSS.MATH.2.OA.B.2
Notes for parents
Subtraction is conceptually harder than addition for most preschoolers, partly because "taking away" is a directional action while addition is symmetric. Visualising the coins flying out of the chest gives the abstract operation a concrete shape. If your child struggles, slow down — show them three real coins, take one away, and count what's left. That fifteen-second analog moment is often enough to unlock the rest.