Conic Construction

The one conic construction that is probably what you know if you know one is the parabola construction. <\br> <\br> In the construction above, the line through A and B is the directrix. Point C is the focus. Point D is placed on line AB and is free to move along the line. A line perpendicular to lina AB is erected at point D. A perpendicular bisector of the points C and D is constructed. The point E where this perpendicular bisector intersects the perperndicular to line AB at point D is equally distant from point C and the line AB, meaning it lies on the parabola with the directrix line AB and the focus C.

Squares in p5.js

Messin' with p5*js

In anticipation of using some version of processing js in a non-AP computer science class I will be teaching this summer, I am just tinkering with arrays this morning. I like how this turned out.

Columbus Math Teacher Circle

I was fortunate enough to attend the Columbus Math Teacher Circle yesterday and to share the game Borel as a way to introduce my favorite instructional arc for teaching probability ideas: Intuition, Simulation, Calculation.

The first problem we looked at was this:

Roll three 6-sided dice and one 30-sided dice. Will the difference between the maximum value and minimum value showing on the dice be greater than 15?

Pause for a moment and think about this problem. What does your gut tell you? Then roll these digital Polypad dice to get a feel.

My Google Data Analytics Capstone Project

What do you hope to take away from this capstone project?
I am hoping to show that I can do it, and maybe demonstrate a practical understanding of data dashboards so I can better serve the schools I am working with.

What is one important skill you think you’ll learn?
I think just brining it all together...R, Kaggle, Tableau...

Which skills do you most look forward to demonstrating?
Google Data Studio perhaps? But I have learned a few new google sheets tricks

What are some issues you might encounter?

Having my OCD kick in.

More Heads or Tails?

Over the course of 100 or 1,000 or 10,000 flips, will there be more heads or more tails? And once one side of the coin takes the lead, do they relinquish it at some point?

I explored this with a simulation using Texas Instruments' Nspire CX CAS with Python.

More messin' with #Python in @TICalculators TI-Nspire CX CAS Premium Teacher Software.

Flip a coin 10, 100, 1000, and 10000 times. Question: More heads (positive) or tails (negative)? @T3Learns pic.twitter.com/TxVt0fvHTB

— Steve Phelps (@MathTechCoach) September 27, 2020

Heads in a row?

 How many coin flips does it take to get N heads in a row? Here is a simulation in Texas Instruments' Nspire CX CAS with Python

pic.twitter.com/BvQIgTMqwU

— Steve Phelps (@MathTechCoach) September 26, 2020