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可能性[Probability Spinner]说明：Create/colour up to nine different spinners and discuss the possible outcomes with the class. The yellow pointer can be set to spin randomly or dragged to the required outcome. The second probability program adds a scale to the bottom of the spinner. The red arrow on this scale can be dragged. There are three different scales to choose from. [重来 下载 全屏显示 收藏 报告错误]   
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