# Category Archives: Lesson Ideas

## ChristMATHS 2022

Download it here. My annual Christmas maths quiz is here. I’ve made it early this year to give people plenty of time to find it. (Looking back, I’ve made some sort of this quiz for 6 years now!) This isn’t just a quiz, it’s a quiz with lots of links to maths. I know some… Read More »

## Trigonometry

Download the PowerPoint here. This is basically a lot of ideas knicked from Resourceaholic. Sorry @mathsjem! Quite happy with this, though. I have used this with my year 9 class this year and I think I’ve taught trig better than I ever have before. Starts with sine. Talking about similar triangles. Not using the calculator… Read More »

## Rounding to significant figures

Download the PowerPoint here. I didn’t want to have an example problem pair for this. Instead I went with more of a pattern spotting thing. I think this is quite nice (it all animates in so isn’t displayed at once). Then some fluency questions. Then another PIXEL PUZZLE. I like these, and my ratio one… Read More »

## Adding fractions and mixed numbers

Download the PowerPoint here. So, I’ve been unhappy with my adding fractions lessons for a while. They were always ‘good enough’ but not actually good. This year, I decided that good enough wasn’t good enough. I needed to finally attack them. Flesh them out, make them interesting, build in opportunity for students to really test… Read More »

## Equations of perpendicular lines

Download the PowerPoint here (thanks to MrBriggs on Twitter for pointing out that I forgot to add this link in!) This lesson went well, actually. Work out the gradients and try and notice something. Then there’s a little bit on making sure we can properly identify when something is a negative reciprocal. Obviously, an example… Read More »

## Equations of parallel lines

Download the PowerPoint here. I quite like this one. It starts with a little whole class activity saying if two lines are parallel or not. If you click ‘check’ it’ll show you the graph. Nice! Then students have to do some solo work on this, matching up equations with the same gradient. This is a… Read More »

## Highest Common Factor / Lowest Common Multiple

Download the PowerPoint here. Just an update, really. Someone contacted me about my HCF and LCM lessons being linked wrongly on here, and I realised that they were a bit crap, so I tidied them up. I removed a lot of ‘narration’ (I initially put these in to help teachers who just wanted to pick… Read More »

## Fractional Indices

Download the PowerPoint here. This is my first post of the term. I guess I’ve started a week late. The reason is quite simple, I think I’ve got a bit of resource writer’s block! This PowerPoint is fine. It’s got an example problem pair. A discussion (which I’ve found a useful bit in my lessons.… Read More »

## Calculating bearings

Download the PowerPoint here Bearings is a topic that I’ve taught really badly in the past. It’s due to a number of factors (teaching measuring, use of worksheets) but mainly I think due to a lack of thinking on my part about the different processes and skills contained within bearings work. I often lumped all… Read More »

## Equivalent fraction diagrams

Download the file here Based on reading Viable Maths by Peter Mattock. When I do equivalent fractions but I rarely do it with the aid of a diagram or a frame like I have here. I haven’t extended this to algebra, but I imagine it would not be difficult to do so.