I chose this week's LOTW because it worked really well as a complete lesson with minimal planning and preparation. I'm a big believer in varying what pupils do in lessons, and I love card sorts, discussion work and all that jazz, but sometimes (particularly on a windy Monday afternoon), that also needs to include more "traditional" style lessons.
Following my trawl through the xkcd archives to find my favourite comics for A Level, I thought I may as well post some that may be relevant for KS3 and GCSE. There are plenty of funny graphs and pie charts (great for the last five minutes of a lesson), and a few topic-related strips.
This post contains a few percentages comics; while they're quite funny, they also have quite a bit of mileage in terms of mathematical discussion, particularly "Hand Sanitizer" and "Fastest Growing".
Clicking on each picture will take you to the xkcd site, where you can get larger resolution versions.
It's no secret that I'm a big fan of bar modelling to get pupils to really think about the calculations they are doing. It's a great way to introduce work with percentages too, and solidifies the link between percentage and fraction calculations. One particular advantage is the flexibility it affords - I had one pupil decide that the best way for her to find 15% was to work out 25% and 10%, then subtract one from the other, rather than the more "traditional" method we'd probably all teach of finding 10% and 5%, then adding together.
Just a quickie tonight to share the love for a few maths puzzle booklets I've found kicking around on the Internet. I'm not sure where they've come from originally, but here are the links:
Maths Practice Puzzles : Fractions and Decimals