I asked the above question, If you had a friend taking this class next year, what advice would you give them?, to the outgoing PreCalculus H group last year. I’m giving the incoming PreCalculus H their responses. Here’s a link to all the responses, and here are some of the absolute jewels. (No e...
Note: this post is a more advanced version of the previous post and uses slightly different software. All this software is free and open-source.
In this post I’m going to outline how to use a workflow to go from a desmos sketch to a processing sketch to Fiji to a 3D file. The basic idea of...
The seniors don’t go to school on the last day, so I had calculus class on Friday with one student (a junior). We went down to the innovations lab to create things. Here’s what we worked on:
Took this sketch from dailydesmos:

I had the student work on the solution after talking about superell...
I’ve been interested in the intersection between Math and Programming ever since I taught my first programming course 12 years ago (call it coding, CS, whatever you’d like). I think I’m finally starting to figure it out. Maybe. I was prodded by Dan Meyer and Julia Tsygan to think more in detail abou...
With the IB exams coming up soon, I’ve started to put more thought into what we should do after the exams (we’ll have 8 blocks or so). For the past three years we did free-form math projects and last year they even wrote up great blog posts about their projects. But due to less time left (we used...
From Car Talk:
RAY: This Puzzler came from Kevin Tobin. A maharajah owned a mango tree that had very sweet, abundant fruit. People would come from miles around to pick the fruit. So the maharajah decided to protect the tree by erecting a series of seven concentric fences around it. Each fence had...
Not what it sounds like.
The four dog problem from Steve Strogatz:
N dogs start in the corners of a regular N-gon. Each runs directly toward the dog on its left. How far do they run before colliding?
— Steven Strogatz (@stevenstrogatz) October 27, 2015
Yet another great car talk puzzler, The Last Seat:
RAY: You’re one of a hundred people standing in line to get onto an airplane that has 100 seats. There’s a seat for every person who’s in line, and each of you has a boarding pass for your assigned a seat. The first person to walk onto the pla...
This tweet was retweeted by Steve Strogatz:
@stevenstrogatz great @Mathologer video on the cardioid and its family: https://t.co/ElDxW67N3X
— Anna Lukács (@launknaacs) November 6, 2015
What a great video, linking linear functions, cardiods, and the family of Mandelbrot sets. Rang m...
(This post demonstrates the math behind the creation of some unusual math art. I got the idea from this tumblr post which I don’t even think works like this. But it was the inspiration behind the pictures.)
Take this function: f(x) = x^2 + a*cos(ax). When you take values of a between 0 and 8...