Purpose:
1
, study
10
And know a number divided by two decimals.
The complementary relationship between increase and decrease.
2
、
Develop children's thinking ability.
Preparation: velveteen teaching AIDS
Process:
1
、
study
10
The composition of.
(
1
)
The teacher showed it.
10
An apple teaching aid, let the children say the name and quantity, and then beside it.
Edge-attached digital card
10
(
2
)
The teacher asked the children to think.
10
How can an apple be divided into two people? How many are there?
How to divide seeds? And ask the children to show it on the blackboard with teaching AIDS.
(
three
)
The teacher pasted them with digital cards.
nine
The numbers next to them are separated by seed separation.
(
four
)
The teacher picked all the apples and left a digital card to let the children know the numbers.
10
can
be divided into
nine
Group different numbers.
(
five
)
The teacher used the stones and digital cards in the calculation bag to guide the children to learn by themselves.
10
about
nine
grow
Divide the method.
2
、
Know the law of increase and decrease of two parts of a number. Guide children to observe
face
10
Switchgear,
What changes have been made to the figures on both sides?
(the number on the left.
Decrease one by one, and the numbers on the right increase one by one. Did the total add up?
Has changed. )
three
、
Summarize.
A number can be divided into two smaller numbers,
Reduce one by one,
The other will increase one by one, and the total will remain the same.
four
In order to stimulate children's imagination, please ask children to
10
Like what? Create a story to help young people.
Children learning
10
The composition of.
(
1
) children discuss first and tell each other.
(
2
) Ask individual children to tell their own stories.
(
three
) Choose the best story award and let the children tell this story to help them.
memory
10
The composition of.
five
Practice and writing
10
The composition of.
study
10
add
Purpose:
1
、
study
10
Further understand the meaning of addition.
2
、
Practice writing application questions from multiple angles, and list the calculations and answers correctly.
Cultivate children's observation and divergent thinking ability.
Preparation: velveteen teaching AIDS
sequence
1
classes
Process:
1
、
study
10
Added.
(
1
)
check against the authoritative text
10
The composition of. Check whether the child has mastered it.
Game: Touch the ball
How to play:
First of all, the teacher suggested that the sum of the times the two sides touched the ball should be
10
Requirements,
In that way