How many different shapes with an area of 2 square units can you make by joining dots on this grid with straight lines?
Teacher: Click on the dots above to show joining lines.
A printable sheet for student use is available here.
A Flash version of the grid is here.
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Topics: Starter  Area  Geometry  Mensuration  Problem Solving  Shape
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Previous Day  This starter is for 10 September  Next Day
Teacher, do your students have
access to computers? 

Here a concise URL for a version of this page without the comments.
Transum.org/go/?Start=September10
Here is the URL which will take them to a similar open ended activity.