人教版小學(xué)一年級(jí)數(shù)學(xué)上冊(cè)《認(rèn)識(shí)鐘表》半時(shí)教學(xué)課件.ppt

1、,認(rèn) 識(shí) 鐘 表,畫(huà)一畫(huà)，描一描。把下面鐘面中的時(shí)針涂成紅色；分針涂成黑色。,看誰(shuí)讀得又對(duì)又快!,1時(shí)半,2時(shí)半,3時(shí)半,1:30,2:30,3:30,4時(shí)半,5時(shí)半,6時(shí)半,4:30,5:30,6:30,10時(shí)半,11時(shí)半,12時(shí)半,10:30,11:30,12:30,7時(shí)半,8時(shí)半,9時(shí)半,7:30,8:30,9:30,通過(guò)觀察，您們有什么發(fā)現(xiàn)？,分針指到6， 時(shí)針剛剛走過(guò)幾就是幾時(shí)半。,2時(shí)半。時(shí)針剛剛走過(guò) ，分針剛好指到 。,1時(shí)半,2時(shí)半,3時(shí)半,1:30,2:30,3:30,4時(shí)半,5時(shí)半,6時(shí)半,4:30,5:30,6:30,10時(shí)半,11時(shí)半,12時(shí)半,10:30,11:30,

2、12:30,7時(shí)半,8時(shí)半,9時(shí)半,7:30,8:30,9:30,1時(shí)半,2時(shí)半,3時(shí)半,1:30,2:30,3:30,4時(shí)半,5時(shí)半,6時(shí)半,4:30,5:30,6:30,10時(shí)半,11時(shí)半,12時(shí)半,10:30,11:30,12:30,7時(shí)半,8時(shí)半,9時(shí)半,7:30,8:30,9:30,8時(shí)半。時(shí)針剛剛走過(guò) ，分針剛好指到 。,10時(shí)半。時(shí)針剛剛走過(guò) ，分針剛好指到 。,1時(shí)半,2時(shí)半,3時(shí)半,1:30,2:30,3:30,4時(shí)半,5時(shí)半,6時(shí)半,4:30,5:30,6:30,10時(shí)半,11時(shí)半,12時(shí)半,10:30,11:30,12:30,7時(shí)半,8時(shí)半,9時(shí)半,7:30,8:30,9:30,外圈數(shù)字表示分，分針走到幾或剛走過(guò)幾是幾分。,內(nèi)圈數(shù)字表示時(shí)，時(shí)針走到幾或剛走過(guò)幾是幾時(shí)。,4時(shí)半,半,4時(shí),4,30,看誰(shuí)讀得又對(duì)又快!,照樣子連線，看誰(shuí)連得又對(duì)又快!,照樣子撥一撥，看誰(shuí)撥得又對(duì)又快!,看一看，現(xiàn)在是幾時(shí)半？想一想，過(guò)1小時(shí)是幾時(shí)半？,在上面的三個(gè)鐘里，只有一個(gè)是8時(shí)半（830）。