Maths Problem-Solving in June

Here is our next puzzle!

What is the greatest number of squares you can make by overlapping three squares of the same size?

Please do send us pictures of the arrangements of your squares.  

We would also like to know how you go about the task.  How will you know if your way really does have the greatest possible number of squares?

You can take part here.

When you've had a go, you can bring in the solutions to share with the class.