This is a whole lesson on trial and error. This is a lesson that pupils love and even though it doesn't involve a huge amount of algebra it does build a solid understanding of quadratics and cubic's in terms of number. This is really helpful then for pupils with their understanding for future more challenging lessons.
It includes, starter, learning objectives, superb examples, questions with answers and plenary.
I have attached a couple of excel files (free in my shop) to help you and pupils use the computer (excel) to do the workings etc...
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