The game is mainly for primary school grade four,corresponding the fourth grade first unit of
primary school mathematics of Human education-- Large number cognition.Games of QD learn are
developed specifically for primary school education ,both educative and entertaining.Game design
is supported by educational theory.One game one knowledge point.Multi angle interpretation.Repeated
practice of different forms of investigation.Play and learn focus.Master difficulty in interest.
Proficiency test.QD learn aims at teaching through lively activities and happy learning.
primary school mathematics of Human education-- Large number cognition.Games of QD learn are
developed specifically for primary school education ,both educative and entertaining.Game design
is supported by educational theory.One game one knowledge point.Multi angle interpretation.Repeated
practice of different forms of investigation.Play and learn focus.Master difficulty in interest.
Proficiency test.QD learn aims at teaching through lively activities and happy learning.

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