Teaching content: new people's education publishing house, fourth grade mathematics book 2
P 1 1
example
five
、
"Do it"
Teaching objectives:
1
、
Knowledge and skills:
Situation creation,
Flexible use of the knowledge of remainder division to solve simple practical problems in life,
Cultivate application consciousness.
2
Process and method: express your ideas bravely in cooperation and exchange, and learn to listen to others' opinions.
three
Emotion, attitude and values: experience the joy of success by solving practical problems reasonably.
Teaching emphasis: cultivate application consciousness and use what you have learned to solve practical problems.
Difficulties in teaching: Learn to listen and express your ideas correctly.
Teaching methods: cooperative communication and independent inquiry.
Teaching preparation: situation map of teaching materials
Teaching process:
First, create situations and introduce new lessons.
teacher
：
Hello, children! Listen to touching songs.
.
Accompanied by soft spring breeze! Today, the teacher wants to take his classmates with him.
What do you think of going boating in the park?
Second, actively explore and solve problems.
1
for instance
five
(
1
) division
：
We came to the chartering place. What information do you find in this picture?
(
2)
Now with this mathematical information, the teacher has a problem for everyone to help the teacher solve. According to these mathematical letters
Come on, let's rent a boat!
(Show problems)
2
solve problems
(
1
) analysis
Tip: If everyone rents a boat or a big boat, what is the price?
Students' independent formulaic calculation.
According to the students' report on the blackboard:
If everyone rents a boat:
32
÷
4=8
(article)
24
×
8= 192
(yuan)
If everyone rents a big boat:
32
÷
6=5
(article)
2
(person)
5+ 1=6
(article)
30
×
6= 180
(yuan)
(
2
) arouse suspicion
Q: All the big ships are rented, but there are some.
1
A boat sat down.
2
People, not full. Is it possible to save money again?
(
three
) Students think independently.
Some people might say.
2
People can go by boat.
(
four
) exchange ideas in groups
(
five
) report
You can put this
2
Man and a big ship
six
Everyone is seated.
2
Small boats can also save money.
four
A ship:
30
×
4= 120
(yuan)
2
A big ship:
24
×
2=48
(yuan)
* * * Flowers:
120+48= 168
(yuan)
Review and Reflection: How did we solve this problem? (Assumption first, then adjustment)
(
six
) summary comparison
Q: Are there any other plans?
Guide to comparison of list schemes.
Third, consolidate the practice.
P 1 1
sequence
four
title
Students do it independently.
Students with different ideas perform on the blackboard and communicate collectively.
Fourth, class summary.
How to solve this problem of chartering? Do you have any questions?
Verb (abbreviation for verb) assigns homework.
Exercise 3
P 12
sequence
five
Title.
Blackboard design:
Solve the problem (chartering problem)
If everyone rents a boat:
32
÷
4=8
(article)
24
×
8= 192
(yuan)
If everyone rents a big boat:
32
÷
6=5
(article)
2
(person)
5+ 1=6
(article)
30
×
6= 180
(yuan)
Combination scheme:
four
A ship:
30
×
4= 120
(yuan)
2
A big ship:
24
×
2=48
(yuan)
Total:
120+48= 168
(yuan)
Try to rent a big ship with cheap per capita rent; Try not to leave any gaps.