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经常遇到却不易掌握的概念孩子在地上滚皮球,爸爸让他把球拿过去,他就将皮球递给了爸爸。这时,能不能说这个孩子已经掌握了“球”这个概念了?答案是不一定的。因为对于这个孩子来说,“球”这个概念可能只代表了他正在玩耍的那个球,或者与此相类似的物体,只有当他对于各种各样的球,如足球、篮球、乒乓球、网球、橄榄球、气球等等,都能说出它们是球,哪怕他从来没有见到过或者没有玩过,这才能说这个孩子已经掌握
Often encountered but not easy to grasp the concept of children rolling the ball on the ground, my father let him take the ball over, he handed the ball to the father. At this time, can we say that this child has mastered the concept of “ball”? The answer is not certain. Because for this child, the concept of “ball” may represent only the ball that he is playing or a similar object to, only if he is responsible for all sorts of balls such as football, basketball, ping-pong Balls, tennis balls, rugby balls, balloons, etc., can say that they are balls, even if he has never seen or played before, can we say that this child has mastered