自动出题100以内的加减法混合运算，给那些要给孩子出题的家长提供方便，快捷键为Ctrl+L-Auto title addition and subtraction within 100 mixed operations, to those who give the child a question for the convenience of parents, the shortcut is Ctrl+ L

有效保护孩子的眼睛,防止孩子贪玩电脑游戏，到时间关闭屏幕。-preject eye

曼陀罗训练图是一种锻炼右脑的训练图，曼陀罗训练图可以训练我们大脑的记忆能力，可以激发我们右脑的记忆效果。曼陀罗训练软件是由各种曼陀罗训练图组成的一款软件，想要训练记忆力的孩子不放来用曼陀罗训练图试试(Datura training map is a training chart for training the right brain. Mandala training chart can train our brain's memory ability and stimulate the me