today we will be learning more about addition and subtraction
DESCRIPTION
Mental Activity We are going to practise counting on and back around the group. When you see or hear “Change!” change direction.TRANSCRIPT
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Today we will be learning
more about addition and subtraction.
![Page 3: Today we will be learning more about addition and subtraction](https://reader034.vdocuments.us/reader034/viewer/2022051009/5a4d1b757f8b9ab0599b714a/html5/thumbnails/3.jpg)
Mental Activity
We are going to practise counting on and back around the group.
When you see or hear “Change!” change direction.
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Start on 97.
Count forwards in ones.
Change!
Change!
Change!
Change!
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Start on 32.
Count forwards in tens.
Change!
Change!
Change!
Change!
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Start on 55.
Count forwards in fives.
Change!
Change!
Change!
Change!
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Practise mentally adding and subtracting quickly.
Say the answer to each sum in 5 seconds.
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11 13+ = 24
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18 9- = 9
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5 ? 12+ =
7
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17 ? 11- =
6
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? 6 9- =
15
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What do 6 and 4 make?
10
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What do I add to 5 to make 12?
7
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Main Activity
Today we are going to think about
how words tell us when
to add or subtract.
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Think of words that mean the same as “add”.
+Do your ideas match any words on
the fox’s list?
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sum
total
plusmore
increase
altogether
These words
mean the same as
“add”.
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Think of words that mean the same as “subtract”.
-
We can check the fox’s list.
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take
less
less thandifference between
decrease
difference
These words
mean the same as
“subtract”.
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These words are often used in problems.
Example:
Aaron had 24 marbles.
Kelly had 8 more.
How many did Kelly have?
3224 + 8 =
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Use one of these words to make up a problem of your own.
addition
sum
total
plus
altogether
more than
increase
subtraction
take away
difference
less
take from
less than
decrease
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Group Work
Addition and subtraction activities using number cards