旋轉圖形
旋轉圖形 screenshots
‹ General Info旋轉圖形 (透過用手指觸控，旋轉不同的圖形，讓學生探究圖形旋轉一周中重疊的次數，加強學生對旋轉對稱的認識。) has 3 screenshots
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