Thursday, 20 July 2017
grid triangles and pythagoras
advanced level students (those who have covered the expansion of tan(A + B)) might like to think about reasons for i...
grid kites and rhombuses
Pierre van Hiele advocates constructing the special quadrilaterals by means of reflections and rotations that way the properties are easily...
grid geometry angles
using the tangent of the angle (but not saying it's that) as a measure of the size of the angle way better than a protractor! the pow...
grid geometry perpendiculars
it seems helpful to consider (and then define) perpendicularity in terms of a 'rotated' vector equal lengths can be established fr...
grid geometry parallels
Pierre van Hiele maintained that geometry should be started off using a square grid it might be advantageous to describe (and define) para...
Wednesday, 19 July 2017
the shapes fit together to make a square (on the 5 by 5 dotty grid) I'm fairly sure that you just need to rotate some of the shapes (me...
Friday, 14 July 2017
equivalent fractions shaded
pair off the equivalent fractions and here
Thursday, 13 July 2017
you are only allowed to do one of the allowed steps indicated for each connecting line try to work from the outside to the inside there sh...
Wednesday, 12 July 2017
Saturday, 8 July 2017
a shape problem
this is a problem used by Einav Aizikovitch-Udi, School of Education in Israel to analyse the responses of high attaining 14 year old stude...
a number puzzle
some developments of a number puzzle
Sunday, 2 July 2017
these are questions from or similar to the KS2 SAT test questions (for 10 to 11 year olds) (they are on the problem solving and reasoning...
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