This is a game about fractions. We have some trees and try to water these, for one of these trees we are responsible and for the other trees play the computer with automated way. We see in the upper part of display six fractions that are changing every 20 sec. The bigger fraction the bigger quantity of water in our tree. Below the fractions we see six buttons and with these we can choose the fraction in any case. Every time when we choose a fraction increase the size of trees according with the specific fraction. When we choose a fraction we will wait 20 sec to choose again and we see a x symbol in the button. After 200 sec the game complete and if we have the tree with the bigger size we win.... We believe this is a helpful teaching resource for teachers, students and parents.