The duck race will motivate you to be better at math subtraction operations when competing with other children or against the computer. The subtraction operations are as simple as possible for the primary class, with numbers up to 10 that can be easily understood. This way you will develop the speed with which you calculate the numbers.
You will be one of the 12 competing rats in the race to win. Perform the drop operations as fast as possible to overtake the other competitors. The competition is tight, and you have to answer correctly to promote, every mistake is penalized, and your duckling will be pulled back. By repeating this game you will be better and better at these math operations and the results will be visible.