median
don steward
mathematics teaching 10 ~ 16

Thursday, 10 May 2012

tangram tasks

there are several tangram interactives available
e.g. this one (utilising geogebra)

the tangram dissection:


find how to fit all of the 7 tangram pieces into these outlines:

you could consider the perimeters
(there are 4)

[in terms of multiples of the square root of 2 and integers]



an interesting set of 3 shapes that look the same size but are not (a kind of paradox)




















find outline shapes that have just one line of symmetry (using all 7 tangram pieces)
some examples (several more can be found):



find an outline shape with rotational symmetry, order 4, using all the tangram pieces
(slightly cheating, with a gap in the centre)
or the square

















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