The bi-weekly Photo/Sharing mailing of 4/16/18 contained a distinct difference from almost all previous such mailings. The entire second section (where other features like Aunt Edna, Verses, Guest Voices, Math Tidbits, and other Updates usually reside) was missing. To see the mailing again, visit Apr16Mailing. I did indeed have subscribers take up the challenge and mention some discrepancies – and […]
Category: Explanations
FREE Book Giveway – May 31, 2017
PROMOTION ENDS AT NOON MAY 31TH Through noon on May 31, chances will be provided to gain entries for the drawing for a FREE copy of the Rollin’ Down The River book, which is now due to be released sometime mid-June. Drawing will still be May 31. Here are the current details and entry updates. (This page […]
Rock & Rev Fundraiser and CAR RAFFLE!
UPDATE!! Any donation for any number of Raffle Tickets now ALSO earns one entry into the May Drawing for a FREE copy of the […]
Is Zero (0) Even or Odd? (Or Neither or Both?)
A whole number is even if it is divisible by 2. Equivalently (since sometimes there is confusion with 0 and the word ‘divisible’), a whole number is even if it can be written as two times some whole number. E.g., 22 is even because it can be written as 2 time somes whole number (namely 11), and […]
AME Events & Weekly Mailings – July through September ’16
On August 1, I will officially set out on my Missouri River Project, tentatively entitled Rollin’ on the River. This will be a 45-day trip (by auto) from the source of the Missouri River in Three Forks, MT down to the river’s confluence in St. Charles, MO, just north of St. Louis. For more details, see Rollin’OnRiver. ***** […]
The Pythagorean Theorem – Amazing & Beautiful!
Most of us ‘memorize’ (what we think is) the Pythagorean Theorem. And it seems to be one of the few things we claim to remember from math classes. My guess is, that if asked right now what the theorem is, most of us would answer (somewhat triumphantly) a2 + b2 = c2 !! And, we’d […]
What is PI really? Enlightening background and history.
This needs to be said carefully, but pi is technically a ratio. More below, but first: a ratio is a comparison of two quantities, as in ‘the ratio of boys to girls in that class is 5 to 4.’ Such a comparison (using the example) is often written 5:4, or sometimes 5/4. And that can be viewed as […]
The Calendar Cubes Problem
Problem Statement: Arrange the digits from 0 – 9 on two blank cubes, in order to be able to form a ‘date calendar’ which will be able to denote any given day of each month. Solution/Discussion: The fun thing about this problem is that there’s one subtle thing you have to notice first, and then, […]
Grist for the Mill: Delightful Disjointed Distractions
A funny thing happened . . . on the way to this entry. Actually a couple of them. Let’s try to deal with both of them . . . Event 1: Previously, I mentioned – in a footnote – a problem called the “Calendar Cube” problem. Interestingly, the footnote made it into the digital version of […]
Special Math Dates in 2016
Here are just a few of the mathematically special dates in 2016. I hope you’ll have fun celebrating them – I know I will! 1. Pi Day 2016 !! We might as well start with what we called last year the ONCE IN A CENTURY date! As you may remember, the common decimal approximation for pi is 3.14. So […]
