Two dots
Place eight dots on this diagram, so that there are only two dots
on each straight line and only two dots on each circle.
Age
7 to 11
Challenge level
Problem
Place eight counters on this diagram, so that there are only two counters on each straight line and only two counters on each circle.
Image
Getting Started
Student Solutions
Josh (Ampthill, UK) explains:
In this you put two dots on each circle directly opposite each other and keep moving in towards the centre of the circle switching on to different lines.For example:
Image
How else could it be done?
Teachers' Resources
Two Dots
Place eight counters on this diagram, so that there are only two counters on each straight line and only two counters on each circle.
Image
Why do this problem?
This problem is very accessible and is a good way of giving children confidence in working systematically.Key questions
Have you checked that there are two counters on all the lines/circles?
Can you find another way of doing it?