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(共17张PPT)
How do we use numbers
Period 1 - Get ready
（沪教版）四年级
上
Learning Objectives
Learn about odd and even numbers
Learn math vocabulary: plus, minus, equal
Practice simple calculations in English
Understand how we use numbers in daily life
Today we'll learn about numbers and how to use them!
Warm-up
Let's start by thinking about what we know about numbers.
Can you count from 1 to 20 in English
1
2
3
4
5
...
20
Let's count together! One, two, three...
Numbers Review
1-One
2-Two
3-Three
4-Four
5-Five
6-Six
7-Seven
8-Eight
9-Nine
10-Ten
11-
Eleven
12-
Twelve
13 - Thirteen
14 - Fourteen
15 - Fifteen
16 - Sixteen
17-Seventeen
18 - Eighteen
19 - Nineteen
20 - Twenty
Activity: Listen and Repeat
Listen to your teacher and repeat
the numbers.
Let's practice saying these numbers together!
Math Symbols
+
Plus (+): "We say
plus
"
-
Minus (-): "We say
minus
"
=
Equals (=): "We say
equals
"
Examples:
12 + 7 = 19 → "Twelve
plus
seven
equals
nineteen."
14 - 1 = 13 → "Fourteen
minus
one
equals
thirteen."
These symbols help us do math in English!
Odd and Even Numbers
Numbers can be divided into two groups:
odd
and
even
.
Even numbers
can be divided by 2 with no
remainder.
Odd numbers
can not be divided
by 2 evenly.
Even Numbers
2
4
6
8
10
Odd Numbers
1
3
5
7
9
Even numbers end with 0, 2, 4, 6, or 8.
Odd numbers end with 1, 3, 5, 7, or 9.
Odd or Even
Circle the correct answer for each question.
Is
4
an even number
Is
7
an odd number
Yes
No
Is
10
an odd number
Hmm, let me think... Even numbers can be divided by 2!
No
No
Yes
Yes
Addition - Plus (+)
When we add numbers together, we say
plus
.
"Ten
plus
two
equals
twelve."
10
+
2
=
12










+


Ten plus two equals twelve. Let's try more examples!
Subtraction - Minus (-)
When we take away numbers, we say
minus
.
"Ten
minus
two
equals
eight."
10
-
2
=
8










10 apples - 2 apples = 8 apples
Ten minus two equals eight. Let's practice subtraction!
Practice Time
Circle the correct answer for each question.
Ten
plus
two equals _____.
9
12
Five
plus
five equals _____.
10
15
Eight
plus
three equals _____.
11
13
Let's practice together! Choose the correct answer.
More Practice
Is this an even or odd number Circle the correct answer.
4
Even
Odd
9
Even
Odd
12
Even
Odd
15
Even
Odd
Remember: Even numbers can be divided by 2, odd numbers can not!
Complete the Sentence
Choose the correct answer to complete the sentence.
Ten minus two equals
.
8
12
6 + 2 =
8
10 - 2 =
8
Let's solve this together!
Think
When do we use numbers in our daily lives
Think about your day from morning to night.
Telling the time
Shopping and prices
Phone numbers
Ages and birthdays
Numbers are everywhere in our lives. Can you think of more examples
What We Learned Today
Today we learned about numbers and how to use them in English.
Odd and even numbers
: Even numbers
can be divided by 2, odd numbers cannot.
Math vocabulary
: plus, minus, equals
Simple calculations
in English
Numbers in daily life
: time, shopping,
phone numbers
Great job today! We learned so much about numbers!
Homework
Practice reading numbers 1-20 in English
Complete workbook page 15
Find 5 examples of numbers in your home and write them down
Practice saying these math sentences:
5 + 5 = 10
8 - 3 = 5
Remember!
Bring your completed homework to our next class.
Don't forget to do your homework! I'll check it next time.
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