【蘇教版】五年級(jí)上：84釘子板上的多邊形ppt課件-文庫(kù)吧在線文庫(kù)
【正文】 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ?● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 1㎝ 1㎝ 引出問題 數(shù)一數(shù)，下面圖形的面積？ 厘 米 1 1厘米 數(shù)一數(shù)，下面圖形的面積？ 引出問題 厘 米 1 1厘米 ? ? ? ? 數(shù)一數(shù)，下面圖形的面積？ 引出問題 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 1㎝ 1㎝ ① ② ③ ④ 圖形編號(hào) 多邊形的面積 /平方厘米 多邊形邊上的釘子數(shù) /枚 ① ② ③ ④ ● ● ● 2 ● 4 ● ● ● ● ● 3 6 7 4 8 、●、 ● ● ● ● ●
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鄂ICP備17016276號(hào)-1