The game is mainly for primary school grade two，corresponding the second grade eighth unit of primary school mathematics of Human education--Knowledge of g and kg.Cute little duck is coming！Different quality items will be sent to the hands of the little duck.On both sides of the tree is cry piteously for food.Come and help the little duck to feed.Finger to the left or right slide operation.Dont feed the wrong, or the tree will be angry.When the tree is full of fruit, he will bear the fruit for the little duck.What are we waiting for, come on and feed the tree. QD learn aims at teaching through lively activities and happy learning.