1、二十四時(shí)計(jì)時(shí)法,猜一猜，老師可能在做什么？,12,9,1,8,7,6,4,3,2,5,11,10,0,0,10月24日,12,9,1,8,7,6,4,3,2,5,11,10,0,1,2,3,4,5,6,7,8,9,10,11,12,12,9,1,8,7,6,4,3,2,5,11,10,0,1,2,3,4,5,6,7,8,9,10,11,12,12,9,1,8,7,6,4,3,2,5,11,10,13,0,1,2,3,4,5,6,7,8,9,10,11,12,13,12,9,1,8,7,6,4,3,2,5,13,11,10,14,0,1,2,3,4,5,6,7,8,9,10,11,12,13,1

2、4,12,9,1,8,7,6,4,3,2,5,13,11,10,14,15,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,15,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,15,17,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,17,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,15,18,17,0,1,2,3,4,5,6

3、,7,8,10,11,12,13,14,15,9,16,17,18,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,19,15,18,17,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,17,18,19,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,19,15,18,17,20,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,17,18,19,20,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,19,15,18,17,21,20,0,1,2,3,4,

4、5,6,7,8,10,11,12,13,14,15,9,16,17,18,19,20,21,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,19,15,18,17,21,22,20,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,17,18,19,20,21,22,12,9,1,8,7,6,4,3,2,5,13,11,10,14,16,19,15,18,17,23,21,22,20,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,17,18,19,20,21,22,23,12,9,1,8,7,6,4,3

5、,2,5,13,11,10,14,16,19,15,18,17,24,23,21,22,20,0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,9,16,17,18,19,20,21,22,23,24,一天結(jié)束了，在這一天中，時(shí)針走了幾圈？一共經(jīng)過了多少個(gè)小時(shí)？,第一圈：從（ ）時(shí)到（ ）時(shí)； 即從（ ）時(shí)到（ ）時(shí)。 第二圈：從（ ）時(shí)到（ ）時(shí)； 即從（ ）時(shí)到（ ）時(shí)。,0,12,深夜12,中午12,12,24,中午12,深夜12,0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24,12

6、1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12,（2圈）,（24個(gè)小時(shí)）,12個(gè) 小時(shí),12個(gè) 小時(shí),1、用24時(shí)計(jì)時(shí)法表示出下面的時(shí)刻,2、17 時(shí)是下午幾時(shí)？23 時(shí)是晚上幾時(shí)？,下午 3 時(shí) 上午 10 時(shí) 晚上 9 時(shí) 下午 6 時(shí) 晚上 10 時(shí) 下午 2 時(shí),15 時(shí),10 時(shí),21 時(shí),18 時(shí),22 時(shí),14 時(shí),3、用普通計(jì)時(shí)法表示下面的時(shí)刻,6時(shí) 12時(shí)時(shí)30分 24時(shí) 16時(shí)18時(shí)45分,早上 6 時(shí),中午 12 時(shí),上午 9 時(shí) 30 分,下午 6 時(shí) 45 分,下午 4 時(shí),深夜 12 時(shí),下午2時(shí)是（ ）時(shí)

7、,中午12時(shí)是（ ）時(shí),早上6是（ ）時(shí),晚上11時(shí)30分是（ ）時(shí)（ ）分,4、用24時(shí)計(jì)時(shí)法表示下列時(shí)間,14,12,6,你知道下面鐘面上的時(shí)間用24時(shí)記時(shí)法表示是幾時(shí)嗎？,8:00,你知道下面鐘面上的時(shí)間用24時(shí)記時(shí)法表示是幾時(shí)嗎？,12:00,你知道下面鐘面上的時(shí)間用24時(shí)記時(shí)法表示是幾時(shí)嗎？,10:00,你知道下面鐘面上的時(shí)間用24時(shí)記時(shí)法表示是幾時(shí)嗎？,17:00,銀行儲(chǔ)蓄業(yè)務(wù)上午幾時(shí)幾分開始，下午幾時(shí)分停止？,這一路公共汽車最早是幾時(shí)幾分開出？最晚呢？,從上午幾時(shí)幾分到下午幾時(shí)幾分這段路禁止小汽車通行？,媽媽去秦皇島，她下午幾時(shí)前到南京火車站比較合適？,你能用24時(shí)記時(shí)法播報(bào)節(jié)目嗎? （同桌互相練習(xí)）,紅領(lǐng)巾廣播站 節(jié)目預(yù)報(bào) 上午時(shí)分學(xué)校新氣象 中午時(shí)兒童歌曲欣賞 下午時(shí)健康教育 下午時(shí)科學(xué)家故事,24時(shí)計(jì)時(shí)法,普通計(jì)時(shí)法,早晨6:30,8:30,中午11:30,16:10,17:20,晚上8:00,晚上9:00,你能給上面的鐘面畫上時(shí)針、分針嗎？,后來,人們利用測(cè)太