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Are the following statements always true, sometimes true or never true?
How do you know?
Can you find examples or counter-examples for each one?
For the 'sometimes' cards can you explain when they are true? Or rewrite them so that they are always true or never true?
A hexagon has six equal length sides
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Triangles have a line of symmetry
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Squares have two diagonals that
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Cutting a corner off a square makes a pentagon |
The base of a pyramid is a square
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A cuboid has two square faces |
What about these more complex statements?
When you cut off a piece from
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Triangles tessellate
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The number of lines of symmetry
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Quadrilaterals can be cut into two equal triangles |
You could cut out the statement cards and arrange them in this grid. Alternatively, you could use these interactivities to organise your thinking:
Three dice are placed in a row. Find a way to turn each one so that the three numbers on top of the dice total the same as the three numbers on the front of the dice. Can you find all the ways to do this?
A game for 2 players that can be played online. Players take it in turns to select a word from the 9 words given. The aim is to select all the occurrences of the same letter.