一、 年、月、日
　　年、月、日······························7
　　閏年······························7
二、 乘法······························8
三、 噸的認(rèn)識······························20
四、 解決問題······························26
五、 長方形和正方形的面積······························37
　　1.面積和面積單位
　　2.長方形和正方形的面積
　　3.面積單位間的進率
　　圍綠地······························54
六、 分?jǐn)?shù)的初步認(rèn)識······························55
七、 小數(shù)的初步認(rèn)識······························68
八、 認(rèn)識方向······························79
九、 整理數(shù)據(jù)······························82
十、 數(shù)學(xué)百花園······························85
　　1.比較
　　2.合理安排時間
十一 、總復(fù)習(xí)······························87
前 言
親愛的同學(xué)∶
很高興和你一起步入數(shù)學(xué)學(xué)習(xí)之旅!
在數(shù)學(xué)之旅中你會遇到很多數(shù)學(xué)問題和能夠運用數(shù)學(xué)知識解決的實際問題。開動腦筋，認(rèn)真思考，你就會成功地解決這些問題，相信你一定會在這個過程中感受到快樂的!
我們一起出發(fā)吧！

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