Olga Hotz
Olga Holtz is Russian mathematician born in 1973 specializing whose parents where both programmers and performs with the Berlin Philharmonic Choir, …
Monthly Archives: October 2016
Why is Fibonacci series numbers used in Agile Planning and Estimations?
How many times do you get a question from a student like this? What could I possibly use this math …
Spaces of Silence
Introduction The theme of one of our priest’s homily was the need to pause, collect your thoughts, silence your attention …
Drawing Large Ellipse for Woodworking
Overview of process Below are pictures showing how to create a large ellipse (half of one but can also be used …
Hummer’s Poker Chips
This math trick is called Hummer’s Poker Chip Trick. The trick uses six poker chips with a number on both …
Di-Ciphering Dice
In 1927 Royal V. Heath marketed a magic effect called “The Di-Ciphering Trick” based on a math trick developed by …
Foolproof Spelling-Based Card Trick
Mark Frauenfelder of Boing Boing demonstrates a foolproof spelling-based card trick that will surely impress children (and adults too!). The …
Number trick 1089
The Trick I have used this number trick many times with beginning Algebra classes. I take a dictionary to class …
Journeyman student’s question on fractions
Question from a reader: I’m currently studying and writing down problems and math just to pass a test at a …
Sum of three digits is 5
A question came up on Quora site. Can you create a decision tree diagram to find all 3 digits numbers …
Islands of Math 
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