蘇教版小學(xué)數(shù)學(xué)四年級下冊第八單元《3、確定位置練習(xí)》ppt1

1、確定位置(復(fù)習(xí)),1,2,3,4,5,6,7,8,7,2,4,( , ),4,2,( , ),,,生活中的數(shù)對,排 數(shù),座位號,,,1,2,3,4,5,6,1,2,3,4,5,6,能找到2座4排嗎？,,,(2,4),單元號,樓號,,,1,2,3,4,5,1,2,3,4,5,,,能找到2單元4號嗎？,(2,4),確定位置有絕招，一組數(shù)對標(biāo)明了（liǎo）。列在前，行在后，前后順序不能調(diào)（diào） ，不能調(diào)（di

2、24;o） ！,,,,生活中的數(shù)對,,2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,1,,,,,(2,7),(4,7),(7,7),(7,4),(7,3),左右平移，行不變。上下平移，列不變。,,,,,,,A(3,2),B(3,4),D(3,6),C(4,5),列數(shù)=3,,,,,,哪些點在同一條直線上？,,,(列數(shù),行數(shù)),,A(1,4),,B(3,4),D(6,4),C(5,6),,,行數(shù)=4,,,(列數(shù)

3、,行數(shù)),,哪3個點在同一條直線上？,,,,,還有怎樣的點，也會在同一條直線上？？？,A(1,5),B(3,3),C(4,2),列數(shù)＋行數(shù)=6,,,,,這些點在同一條直線上嗎？,,(列數(shù),行數(shù)),,D(5,1),A(3,1),C(6,4),B(4,2),,,列數(shù)－行數(shù)=2,,,這些點在同一條直線上？,,(列數(shù),行數(shù)),,D(8,6),A(2,1),C(6,3),B(4,2),列數(shù)÷行數(shù)=2,,,,,這些點在同一條直線上？,,(

4、列數(shù),行數(shù)),,D(8,4),,1,2,3,4,5,6,7,9,8,,0,,,,,,,,(1,12),(2 ,6),(3 ,4),(4 ,3),(6 ,2),(12,1),(列數(shù),行數(shù)),列數(shù)×行數(shù)=12,,,,,1,2,3,4,,,,,,,,,,,,0,1,3,2,4,5,6,,,,,,神奇的數(shù)對,帳篷搭建在哪里?,(2,1),(8,2.5),神奇的數(shù)對,你能清楚地告訴外星人,他現(xiàn)在在哪里嗎?,經(jīng)線,緯線,,,,北緯31&#