Odd and Even


If we draw numbers arranged in twos you can see if they are odd or even. These numbers are even. You can see they are even across the top.
 
 even numbers
These numbers are odd. You can see they have an odd square sticking out at the top.
 

odd numbers
  
I am going to add two even numbers, 8 and 4. This means I am going to put them together. I have also turned them round so they fit in better.
Is the answer odd or even?
 
 add

What about these two? Is the answer odd or even?
Can you write down the numbers which have been added?
 
 add
 
Now I am going to add an odd number to an even number.
Is the answer odd or even?
Can you write down the numbers which have been added?
 
 add
 
What about these two?
Is the answer odd or even?
Can you write down the numbers which have been added?  
 
 add
 
Finally, I am going to look and see what happens when I add two odd numbers.
Is the answer odd or even?
Can you write down the numbers which have been added?
 
 add odd
 
What about these two?
Is the answer odd or even?
Can you write down the numbers which have been added?

 add
I had to turn the pictures round so they fitted. Have go yourself.
You can cut the shapes out of squared paper or use this sheet.