Comparing within 100
Today is Saturday, July 6th , 2019.
We reviewed comparing numbers with 100.
Q:What is this sign?
A:It is an equal sign.
Five orange rings equals five purple rings;
So there are as many orange rings as purple rings.
Q:What is this sign?
A:It is less than sign.
Three is less than five.
Q:What is this sign?
A:It is greater than sign.
Five is greater than three.
Q:Which player has fewer lights?
A: The left player has fewer lights.
Q: So which sign can we use?
A:We can use ‘is less than’ sign.
Six is less than nine.
Q:Which player has more lights?
A:The left player has more lights.
Q: So which sign can we use?
A: We can use ‘is greater than sign’ .
Seven is greater than four.
Q: Which number is greater?
A: Number fifty-three is greater.
Q: So which sign can we use?
A: We can use ‘is greater than sign’ .
Fifty-three is greater than thirty-five.
Q: Which number is greater?
A: Number eighty-seven is greater.
(让孩子看图输出)
Eighty-seven is greater than forty-three.
Eighty-seven is greater than fifty-three.
Q:Which number is greater?
A: Number ninety-eight is greater .
Q: So which sign can we use?
A: We can use ‘is less than sign’.
Eighty-seven is less than ninety-eight.
本课教学目标:
一学习了100以内数字比较大小及英文表达。
知道了大于号>(greater than sign)和小于号<(less than sign)以及等于号= (equal sign)。
关键句型:
53<67 Fifty-three is less than sixty-seven.
45>32 Forty-five is greater than thirty-two.
11=11 Eleven equals eleven.
这部分是难点,greater than和less than宝贝们有时还分不清楚,需要再继续巩固。加油吧!
本次的数学课主要让孩子们判定数字1至10和10至100之间的不等式关系;能够用符号表示数字间的不等式关系。课件通过两个选手在游乐场进行游戏项目比赛的故事形式让孩子了解等号(equal)、大于号(greater than)、小于号(less than)的基本概念;判定数字0至100间的不等式关系并用数学符号表示出来。 主要让孩子输出:…rings equals…rings. …is less than … . … is greater than …
I use equal/is less than/is greater than sign to compare these two numbers.
1.学生能确定1-10,10-100之间数字的非等于关系(大于,小于,)并能利用正确的符号来表达这种关系。
2.学生能表达出:Five orange rings equals five purple rings;Three is less than five;Five is greater than three。
本课关键词:
equal sign/less than sign/less than sign
__is greater than__
__is less than__
__equals__
课后作业:
1.语音作业--
语音作业-- 根据语音复习数学课的语音。
2.笔头作业--
自己从1-100之间选择数字,并按照
“ 5 > 4 5 is greater than 4”的格式,自己出20到数学小题,写在下发的抄写本上,没有抄写本的可以写在白纸上,上次下课带来。