Game 1
Add Only 1 Dot
One-step addition using numbers 0 through 12.

Solve four cards in 60 seconds to jump to game 2.

Pick the wheel that makes the target number (shown in white) using addition ONLY. Use all numbers on the wheel, but use each number only once.

Example:
Target number is 6.
The left wheel works.
5 + 1 = 6

Game 2
Subtract Only 1 Dot
One-step subtraction using numbers 0 through 12.

Solve four cards in 60 seconds to jump to game 3.

Pick the wheel that makes the target number (shown in white) using subtraction ONLY. Use all numbers on the wheel, but use each number only once.

Example:
Target number is 3.
The right wheel works.
5 – 2 = 3

Game 3
Add and Subtract Only 2 Dot
Randomly displays Add Only or Subtract Only. One-step, using numbers 0 through 24.

Solve four cards in 60 seconds to jump to Skill Set 2.

Pick the wheel that makes the target number (shown in white) using addition or subtraction ONLY. (Cards rotate at random.) Use all numbers on the wheel, but use each number only once.

Example:
Target number is 13.
The left wheel works.
17 – 4 = 13