數學．粵語 兩次退位減法 梁鴻 初小 數學 更多 online-teaching;number-blocks;Visualization;Free-educational-software;Interactive-learning;Number;NUMBER-PIECES;Place-value;Numbers-of-three-digits;Immediate-feedback;Addition-and-subtraction;Abdicated-subtraction;
幼兒教育．粵語 網上遊戲和Powerpoint的應用：齊來數一數 高穎林 幼兒教育 更多 Extended-Activity;Interactive-Game;Number;ppt;quantity;Sea-Animals;Web-Resource;mathematics-early-childhood-education;
