知识点：Understanding Of Angle
The pupil need to click the picture in which the angle belong to the same kind of angle with the picture above.
The understanding of angle is designed for second-grade pupils to get intuitive perception of different angles, such as acute angle, right angle and obtuse angle. Games of QD Learn are developed specifically for primary school students, both educative and entertaining. All the QD Learn games are designed according to educational theory. Each game is designed for each knowledge point. QD Learn aims to teach through lively activities and happy learning.