https://pinboard.in/u:keithpeter/public/ recent bookmarks from keithpeter 2021-05-25T13:02:44+00:00 https://wild.maths.org/ren%C3%A9-descartes-and-fly-ceiling keithpeter> "The coordinate system we commonly use is called the Cartesian system, after the French mathematician René Descartes (1596-1650), who developed it in the 17th century. Legend has it that Descartes, who liked to stay in bed until late, was watching a fly on the ceiling from his bed. He wondered how to best describe the fly's location and decided that one of the corners of the ceiling could be used as a reference point." << I'm stealing that one]]> notes graphs https://pinboard.in/ https://pinboard.in/u:keithpeter/b:5be118487263/ 2011-01-17T11:29:33+00:00 http://sohcahtoa.org.uk/pages/files/data04-box-and-whisker-plot.pdf keithpeter maths numeracy data graphs charts handouts gcse https://pinboard.in/ https://pinboard.in/u:keithpeter/b:1b276496c28e/ 2011-01-17T11:26:06+00:00 http://sohcahtoa.org.uk/pages/files/data03-scatter-diagram.pdf keithpeter maths numeracy data graphs charts handouts gcse https://pinboard.in/ https://pinboard.in/u:keithpeter/b:5a5b404cd916/ 2011-01-17T11:22:49+00:00 http://sohcahtoa.org.uk/pages/files/data02-cumulative-frequency-diagram.pdf keithpeter maths numeracy data graphs charts handouts gcse https://pinboard.in/ https://pinboard.in/u:keithpeter/b:6b8b0ad1a0bd/ 2011-01-17T11:18:34+00:00 http://sohcahtoa.org.uk/pages/files/data01-frequency-diagram.pdf keithpeter maths numeracy data graphs charts handouts gcse https://pinboard.in/ https://pinboard.in/u:keithpeter/b:8f8a7621f4b3/ 2011-01-03T19:24:03+00:00 http://sohcahtoa.org.uk/pages/files/gcse-graphs-part-one.pdf keithpeter maths algebra graphs handouts gcse https://pinboard.in/ https://pinboard.in/u:keithpeter/b:c703c4eb5979/ 2010-12-27T15:30:22+00:00 http://bodmas.org/pages/images/5positive.png keithpeter maths linux graphs https://pinboard.in/ https://pinboard.in/u:keithpeter/b:7c4df16307cc/ 2010-12-27T12:38:13+00:00 http://gnuplot-tricks.blogspot.com/2009/06/plotting-inequality-in-2d.html keithpeter maths graphs https://pinboard.in/ https://pinboard.in/u:keithpeter/b:dc90ab419c46/ 2010-12-27T12:33:25+00:00 http://sparky.rice.edu/gnuplot.html keithpeter maths graphs https://pinboard.in/ https://pinboard.in/u:keithpeter/b:73981968aa5b/