Eddie's Math and Calculator Blog

Hi everyone! I am blogging from Coffee Klatch in San Dimas, CA! I was overdue for a latte. Their pumpkin brownies are to die for. Facto...

Julian Havil. "The Irrationals: A Story of the Numbers You Can't Count On" Princeton University Press, 2012 Clifford A. Pick...

Welcome to Part 5 of Calculator Tricks Part 5 will cover: * Solving 2 by 2 equations * Finding roots of the quadratic equations The above t...

Welcome to Part 4 of Calculator Tricks. This is series is where accomplish mathematical tasks with a use of a regular, simple calculator. ...

Welcome to Part 3 of the Calculator Trick series using the Simple Calculator. This part covers: * Squaring Numbers * Reciprocals * Geometr...

Fractions Welcome to Part 2 of the Calculator Tricks series. We are using a simple ("four banger" calculator) to tackle common m...

First of all, I am home taking care of my dad today. He's doing fine, recovering from surgery. I also want to thank everyone who read...

Here are four famous numerical constants, extended to 50 decimal places: π, e, γ, and √2. For each constant, the approximation will be lis...

Greetings everyone! Honnold Mudd Library Yesterday I visited the Honnold Mudd Library, which is part of the libraries of the Claremont Col...

As we move closer to using our tablets, smartphones, and other "one-stop" machines for literally everything, I want to start rev...

Here is what went on during Day 2 of the HHC Conference: Wlodek Mier-Jedzejowicz - "Is It a Really Pathetic Name." (My apologizes...

Greetings from Nashville! I am at the HHC 12 conference. It is an annual conference for Hewlett Packard Calculator enthusiasts, held ever...

Volume of a Parabolic Vase Introduction The following procedure is how to find the volume of a parabolic vase. This is a vase where the ...

I am going to a calculator conference in Nashville, TN next weekend. The conference is for Hewlett Packard calculator enthusiasts. Can'...