Another take on the Think Of a Number. Depending on level, can extend it to turning the instructions into an expression. DON'T FORGET to put your own name on the slides of &'results&'; in place on mine, unless you want your class to think of me as their role model.
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A fun starter that could easily be extended.
You could challenge you ables to work out why it works before the reveal.
Great little resource!!
This is funny. You can explain to children the algebra involved - i.e. favourite number = x, so multiply by 3 gives 3x, add 3 gives 3x +3, and multiply this by 3 gives 9x + 9. You are always going to get a number in the nine times table!
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