**Keith Burnett**

ping-dot-keith commercial-at gmail dot com

**GCSE maths handouts**

- GCSE Angle facts place mat
- An A3 format pdf file with facts on the first side and questions to try on the second side.
- Probability Rules and Tools
- An A4 format handout with GCSE foundation maths notes on probability. There is also a two page glossary.
- 200 pages of GCSE Foundation Maths questions
- A couple of years worth of questions and tests. No solutions and you need to watch for typos.
- Number topic guide
- GCSE Foundation maths. My attempt at a clear layout for dyslexic students (but suitable for everyone).
- Four Maths place mats
- Designed for printing in colour on A3 paper, best for revision.
- 2014 vintage Rules and Tools guides (old syllabus)
- Algebra, data and number. Written for the old GCSE Foundation syllabus.

**Maths bits and pieces**

- Deriving the quadratic formula
- This one came up in a higher tier GCSE class I was sitting in the other week so I wrote it out just in case I need it again.
- Quadratic sequences and the
*n*^{th}term formula - A systematic exploration using algebraic notation.
- Special angle values
- Work out the exact values of the sine, cosine and tangent for 30°, 45° and 60° using Pythagoras' result and the trig ratios. I've used a limit based argument to justify the values for angles of 0° and 90°.

**Other stuff**

- Current Wallpaper: Biggs Orca Whales image from Hakai magazine
- They range over the oceans north to south.
- vi selected commands
- based on Greg Tarsa's vi reference card. The original vi tutorial is still a good starting point - just ignore all the stuff about termcaps.
- NetBSD 10.0 quick start
- Light installation runs fine on an ancient Thinkpad T60. Successfully updated base system to 10.0 release.
- Installing OpenBSD 7.5 on a laptop
- A step by step guide to installing OpenBSD on a BIOS laptop with a useable desktop.
- GNU Nano quick reference
- My one side guide. Nano gets the job done for many people.
- Year planner for any year
- I like to see everything in one place if I can - even just as colour coded tags.
- 52:48
- A pictorial representation of a strangely topical ratio.
- My universal bread recipe
- One dough to rule them all. Mine is a low salt recipe.
- The rising and setting of the Sun and Moon and the times of twilight
- A self contained Javascript calculator page that you can save to your computer.
- The Old Computer Challenge
- Each summer for the last four years or so, an assorted bunch of people have spent a week (roughly) using an 'old' computer of some kind and participating (to varying degrees) in a loose community.
- Old Wallpapers
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Last updated 2024-07-21