Calculate the areas of all the possible quadrilaterals that can be constructed by joining together dots on this grid:
Teacher: Click on the dots above to show joining lines. Assume that the vertical and horizontal distances between adjacent dots is one unit.
A printable sheet for student use is available here.
A Flash version of the grid is here.
Tweet about this starter  Share 
Topics: Starter  Area  Geometry  Investigations  Mensuration  Shape
How did you use this starter? Can you suggest
how teachers could present or develop this resource? Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.
If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:
This starter has scored a mean of 3.2 out of 5 based on 204 votes.
Previous Day  This starter is for 22 March  Next Day
1 square unit 
1.5 square units 
2 square units 
2.5 square units 
3 square units 
4 square units 
Teacher, do your students have
access to computers? 

Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a related student activity.