Paper Boat – Arithmetic Four (old name:Rainbow’s Choice) is a mathematics exercise game made for kids age over 6.

Connect the correct answers by rainbow allow children practise their basic Maths skills.

Earning stars to redeem gifts in their real life could motivate their willing to practice.
Functions:

-Customizable round number (5~10)
-Adjustable error rate
-Adjustable Exp to suit children’s patient(full unlocked version)
-Adjustable question number to fit children’s level (free version:5~10)
-Pick one or more from four Operators (free version: + only)
-Customizable gift list (full unlocked version)
-Password proctection for option menu
-Complete game active log