Category: Newsletter

The archives of this website’s newsletter. The newsletter announces new games that appear on the site, and other interesting related events

What?? More Graph Paper??

[This is a back-issue of this site’s newsletter]

 

There are three quick items for today’s newsletter – the main one is that I’ve just uploaded yet another set of graph paper to print out.
Triangular Graph Paper This time, it’s triangular graph paper – tesselations of equilateral triangles. Again, the tesselations come in various sizes, from 1 mm to 1 inch. Besides just showing a nice regular pattern, triangular graph paper is useful for graphing relationships between three different quantities whose sum is a constant – for a silly example, you could plot how much you spend on milk, butter and cheese, given a fixed “dairy” budget.

Speaking of graph paper, if you tried to download the Hexagonal Graph Paper I announced last time, the broken links on the page are now fixed! Come to the site and try again!

Last week, I also told you about a new iPhone game in the works. Well, the first version of Black Jelly Bean is now available for iPhone and iPad! More updates to follow…

Bye for now!
Michael Hartley

 

 

[DMMGFK #58] Archimedean tiling graph paper to print

 This is a back issue of this website’s newsletter.

Many centuries ago, one of the greatest thinkers of all time wrote a book about some beautiful symmetric shapes. All we know about what he wrote is from quotations by other writers many centuries later. Today, these beautiful shapes are called the Archimedean polyhedra.


Archimedean Graph Paper Continue reading [DMMGFK #58] Archimedean tiling graph paper to print

[DMMGFK #56] 4 Million Cryptarithms Online Now

This is a back-issue of this site’s newsletter

 

Have you heard of cryptarithm puzzles? They’re a great pre-algebra puzzle, and some can be quite mind-bending. They’re also called called Crypt-Arithmetic puzzles, Letter Arithmetic puzzles or other names. A cryptarithm is a mathematical sum where each digit has been replaced with a letter. The puzzle is to restore the original sum.  Continue reading [DMMGFK #56] 4 Million Cryptarithms Online Now