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'Cuisenaire Environment' printed from http://nrich.maths.org/
Full Screen Version
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Click on 'Rods', to choose a Cuisenaire rod and then drag it onto
the squared background. More rods can be added in a similar way and
aligned as you wish. A rod can be rotated by $90^\circ$ by clicking
any key whilst dragging. The background squares can be altered (for
example increasing/decreasing their size) using the 'View'
You could use this environment for all sorts of purposes - perhaps
to explore addition and subtraction, factors and multiples or ideas
For more ideas, look at the
section, or go to
where there is a collection of Cuisenaire problems.