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兒童的科學#57 普通版


Summary

~ 今期主題:2010一秒看地球 隨書附送 DIY時計 -科學實踐專輯1:24小時 拆解時計乾坤 外星人來到地球,發現了今期教材「DIY時計」!究竟時鐘的構造是怎樣的?秒針、時針和分針如何配合運作,顯示時間?時間與太陽東升西落又有何關係?為甚麼一天有24小時?為甚麼世界各地時間不同?甚麼是協調世界時間? -科學實踐專輯2:兒童的科學DIY時計特約 一秒看地球 地球日以繼夜轉動,面貌也在瞬息萬變。就在我們眨一眨眼、打一個噴嚏,或是抓一抓癢的數秒間,世界已產生天翻地覆的變化。這一秒,森林消作者/Author: 兒童的科學編輯部出版社/Publisher: 匯識教育有限公司


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