Errors and Inequalities

Recently I was revising y = mx + c with my Year 10s.  I was using an app that demonstrated the gradient calculation for different lines.  The line started with a vertical change of 2 units and a horizontal of 1 giving a gradient of 2 ÷ 1 = 2.  I could then drag the […]

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Prime Factors

My students normally arrive well versed in finding prime factors.  They enjoy drawing factor trees and generally prefer to call them ‘cherry trees’. It is worth stressing to students that 1 is not a prime number. However students are often interested that this was not always the case and as recently as the 1950s some […]

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