Simon’s geometric calculator for +, -, ×, ÷ and √
To add a + b, start at a on the plus scale. Then move b units. You’ll end up at a + b.
Category: Murderous Maths
Linear Equations in Geogebra
“This is what matrices and matrix manipulations really look like”, Simon says, making this visialization inspired by a video on Zach Star’s channel. Simon’s Geogebra project is published online at … Continue reading Linear Equations in Geogebra
Formula for e
I’ve worked out a formula for e! This came up when I was looking for an antiderivative, if n isn’t equal to 1: if n is equal to 1, then … Continue reading Formula for e
New Friends. New Horizons.
Thanks to the lock-down, Simon’s got new friends. For a little over a month now, he has been part of exciting daily discussions, challenging coding sessions and just playing together … Continue reading New Friends. New Horizons.
Science on the Balcony: Position of a Pendulum
Simon: “The direct formula for the position of a pendulum is not what you might think”. Simon’s code for spring and graph: https://editor.p5js.org/simontiger/sketches/mWp6gQLxz Simon’s code for pendulum with directed fields: … Continue reading Science on the Balcony: Position of a Pendulum
More Stephen Wolfram and Brian Greene
What has been your silver lining during this COVID-19 crisis so far, in terms of self-directed learning? Simon is happy that Grant Sanderson, Stephen Wolfram and Brian Greene all have … Continue reading More Stephen Wolfram and Brian Greene
Calculating √2
Mom, I’ve tried the ancient Babylonian method and got 0 digits of precision after four iterations. Then I tried the continued fraction method and got four digits of precision after … Continue reading Calculating √2
What do we know: COVID-19 and Protein Folding
On April 9, Simon finished his World Science Scholars course “From Chemistry to Living materials” and had his final live session with MIT’s Professor Markus Buehler who works on COVID-19. … Continue reading What do we know: COVID-19 and Protein Folding
The Formula for Pentagonal Numbers
A pentagonal number extends the concept of triangular and square numbers, but the patterns involved in the construction of pentagonal numbers are not rotationally symmetrical. The nth pentagonal number pn is the number of distinct dots in … Continue reading The Formula for Pentagonal Numbers
Doughnut Education
Pondering over the future, I told the kids the universal basic income and Doughnut Economics should be the next step. Simon game me an improvised lecture on doughnut topology. Well, … Continue reading Doughnut Education
Simon’s Corona Epidemic Simulation Code Along Project
At the beginning of April, Simon started working on his COVID-19 epidemic simulation project, implementing a number of scenarios (like various degrees of hygiene, quarantine, social distancing), explaining his code … Continue reading Simon’s Corona Epidemic Simulation Code Along Project
Corona Math
On March 17, Simon started a series of math and coding projects about COVID-19. The first projects he called Corona Math: Why Social Isolation? This is part I of my … Continue reading Corona Math
Geeks out of the box 