# Monthly Archives: March 2018

## Variation Grids: Substitution

I know I’d said I’d do simplifying a ratio first but I got distracted. PDF Here | Editable excel file here

## Vary and twist : Inverse proportion

Another ‘vary and twist’. This time on inverse proportion. Download it here. I have added a section at the top making explicit that students should make an expectation of the answer before working it out, as I think this is where the power of these types of activity come from. My thinking A question to… Read More »

## Vary and Twist: Proportion

I’m going to call these Vary and Twist. Section A is some variation practice. Here’s my thinking behind the variations: Simple example Context change, numbers stay the same OK. Now double what we require. answer doubles Amount needed triples, answer triples. Also 6 x first one We’ve doubled the number of pens in the first… Read More »

## SSDD Problems

I’ve been using Mr Barton’s SSDD Problems with my year 11 class. I think they’re really good. They do a really good job of making students pick out what they need to do. Here’s a great one. This is great because it makes pupils read the question. It was fantastic for revision because we got… Read More »

## An attempt to combine two ideas: dividing in a ratio

A worksheet attempting to combine Craig Barton’s ideas on variation theory (only changing one part at a time) and Dani and Hunal’s ideas around making students make choices. I’ve tried to build up to that. Maybe by trying to combine both I miss the point of each. Download the worksheet here. Would love criticisms and… Read More »

## #Mathsconf14 Takeaways

I thought I would use a similar format to my ATM Don Steward takeaways. These are just some quick thoughts. They’re by no means things I’ve thought about for a great deal. My first session was Peter Mattock’s session on averages. It was great, although in sessions like this I worry I talk too much.… Read More »

## Maths in the real world – The Sun’s Brexit percentages

This piece of maths in The Sun was all over Twitter this week. It was retweeted and praised by MP Jacob Rees Mogg. The maths in it is wrong. Wrong, but interesting. A lot of people tried to correct it on Twitter, but Twitter is not the place for explaining mathematical content. The Sun has… Read More »