There are many activities that make use of a pinboard or
geoboard. By using the controls at the bottom of the
interactivity you can change the number of points around the
circle - or select a geoboard with a central pin - or create a
square pinboard.
Click on the colour bands, then drag the band you create onto
the board. To attach them you will need to pull them over the
pegs. To change their position - or remove them - "loop" them
off each peg in turn.
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This text is usually replaced by the Flash movie.
If you would like to work on paper, the
Printable Resources page has links to printable sheets of
circles with a range of numbers of circumferential dots.