Kayla brought her My Little Pony toys to school today.
She showed us how she could sort them into sets.
We used a Venn diagram to show how she sorted them. 
Can you guess how she did it?
She made a set of horses that had tails and a set of horses 
that had manes.
Then Kayla put one horse in the middle that had a tail 
AND a mane.
Clever Kayla.