Concept of division powerpoint 20th apr 2015 (1)
Transcript of Concept of division powerpoint 20th apr 2015 (1)
Concept of Multiplication (Revision)
Introducing the Concept of Division
using a Partition and Quotition Resource
Use of the Partition Mat
One Sunday morning the sun was shining and I went to visit the zoo. On my arrival I saw 8 wild animals all in a fenced enclosure
Use of the Partition Mat
I wanted to share those 8 wild animals with the 4 empty cages I had just walked past
Use of the Partition Mat
How many wild animals will go in each of the 4 cages?
Lets have a look………..
Use of the Partition Mat
1 in each of the cages and we still have more wild animals to share
Now lets try 2 in each of the cages
Use of the Partition Mat
Have we shared the wild animals out fairly?
How many wild animals did we start with……….’8’
How many wild animals are in each of the cages…….’2’
What did we do?
Use of the Partition Mat
We had 8 wild animals, we shared them out between the 4 cages and each of the cages got 2 wild animals.
Did we have any wild animals left over?
Revision of Multiplication using the Division Resource
Turning the partition mat around we can model multiplication
Revision of Multiplication using the Division Resource
This mat is showing each of the 4 cages have 2 wild animals living inside
Revision of Multiplication using the Division Resource
How many animals are there altogether?
How could we work this out……………..
2 by 4 = 8
So 8 shared by 4 = 2
And 4 by 2 or 2 by 4 = 8
Using the Division resource to show Quotition
This is a quotition mat
Quotition is repeated subtraction where a small quantity is
repeatedly subtracted from a large amount. Finding the
number of groups to share in total.
Using the Division resource to show Quotition
I have 6 animals and I am going to give my animals to the local zoo
Using the Division resource to show Quotition
I want to give 2 animals to each of the empty cages.
How many animals can I give to the zoo?
Using the Division resource to show Quotition
So I can put my 6 animals into 3 of the cages, if I put 2 animals in each of the cages
Have we shared the animals out fairly?
Have we any left over?
How many groups did we use?
Multiplication story using the quotition resource
The zookeeper brought his camera to the open day at the zoo. The zookeeper wanted to take photo’s but could not fit all 6 animals in. He needed them to be shared between the 3 cages?
How could he share them?
How many animals were in the first group?
Multiplication story using the quotition resource
How many in the second group? How many in the third group?
6 shared by 2 = 3