How Many Squares 2

A Maths Starter of The Day

How many squares can be found by joining four dots on the grid below?

 

Teacher: Click on the dots above to show joining lines.

A printable sheet for student use is available here

 

 

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  • Greg, New York
  • Tuesday, September 01, 2009
  • "On the website, it says that there are only 4 green ones and that the total is 11. they are wrong. There are actually 8 green ones and the total is 15 because there are 4 big green squares on the outside and 4 small green squares in the center."
  • Rob, Estonia
  • Thursday, January 07, 2010
  • "Read the question again - the 4 green squares you point to are not drawn by connecting the dots and thus do not count towards the answer. 11 is correct."

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Answer

11

How Many Squares 2

4 green, 5 black, 1 red and 1 blue
Teacher, do your students have access to computers?
Do you have "Laptops in Lessons"?

Whether your students each have a TabletPC or share a desktop PC, this activity lends itself to eLearning (Engaged Learning).

Here's the URL which will take
them to this page.

http://www.transum.org/go/?to=How

 

Extension Activity
How many rectangles can be found by joining four dots on the grid?

Other shape counting starters:

How Many Squares 1? | How Many Squares 2?
How Many Triangles 1? | How Many Triangles 2? | How Many Triangles 3?
How Many Rectangles? | Rectangles Investigation | Icosahedron