Download the PowerPoint here What I like talking about, though is efficient calculations. I’ve extracted them and made them into their own lesson here. I really believe in talking about this stuff. My year 7s will sit for ages and work out a calculation left to right without even thinking about number bonds. We’re sometimes… Read More: Efficient Calculations : Addition and Subtraction »
Really interesting article and worth a read Subtraction presents various problems to learners of mathematics, not least with the mechanics of hand calculating the result of subtracting one multi-digit number from another. But that’s not the kind of difficulty I’m interested in: I’m more interested here in the difficulties that arise when computations involving several… Read More: Robert Low: Why is subtraction so hard? »
I don’t know about you, but as a secondary school teacher I’ve not often thought about teaching some of the maths fundamentals. We assume students can already add, subtract, multiply and divide single digit numbers. Secondary teachers don’t pay enough credit to primary teachers, who have the critical job of embedding concepts like place value.… Read More: The Progression Of Addition and Subtraction »