Nick's Mathematical Puzzles
Welcome to my selection of mathematical puzzles. What's new? See puzzle 160. The math puzzles presented here are selected for the deceptive simplicity of their statement, or the elegance of their solution. Explaining how an answer is arrived at is more important than the answer itself. Each puzzle is assigned a level of difficulty of between one and four stars, with four being the most difficult. The source for each problem is given at the bottom of the solution page. I welcome feedback of any kind. Some brief biographical information. Nick Back to top

I Love Math and Young Math
►The "I Love Math" series by TimeLife covers virtually every elementary math concept. These books can be used to explore math concepts within the stated themes, and are possibly the most-read math readers in our home library among all our kids. They are out of print, but many can be found at used booksellers at reasonable prices. To print, click on the printer icon at the bottom of the list Play Ball: Sports Math (I Love Math) - Sports theme math, many concepts explored in one book. Pterodactyl Tunnel: Amusement Park Math (I Love Math) Math puzzles, activities and stories with a dinosaur theme. The Case of the Missing Zebra Stripes Zoo Math (I Love Math) Math thru a trip to the zoo The Mystery of the Sunken Treasure: Sea Math (I Love Math) Math activities with a sea theme Alice in Numberland: Fantasy Math (I Love Math) From Head to Toe, Body Math (I Love Math) multi-math concepts explored with anatomy Look Both Ways: City Math (I Love Math) Math in Life – multi-concept stories and activities

Patterns are math we love to look at
Why do humans love to look at patterns? I can only guess, but I’ve written a whole book about new mathematical ways to make them. In Creating Symmetry, The Artful Mathematics of Wallpaper Patterns, I include a comprehensive set of recipes for turning photographs into patterns. Here’s a pattern I made, using the logo of The Conversation, along with some strawberries and a lemon: Mathematicians call this a frieze pattern because it repeats over and over again left and right. When we can do something to a pattern that leaves it unchanged, we call that a symmetry of the pattern. You can make frieze patterns from rows of letters, as long as you can imagine that the row continues indefinitely left and right. What other symmetries does it have? Now here’s where some interesting mathematics comes in: did you notice the reflection axis between the As? Suppose a pattern stays the same when you flip it about a mirror axis. That proves it! What do I mean by horizontal stuff?

Seasonal Math Activities
These math activities are organized by seasons. Elementary teachers often incorporate seasonal activities as craft projects. Many of these seasonal craft projects can be mathematical as well with a little forethought. Browse the activities for projects to add that reinforce mathematical concepts and skills through seasonal and holiday themes. Back-to-School Activities Back-to-School Activities: include glyphs, math-literature connection, problem solving and daily math routines. September 2007: Back-to-School Issue includes writing in Math class, active participation, using math templates.

Fibonacci Numbers, the Golden section and the Golden String
Fibonacci Numbers and the Golden Section This is the Home page for Dr Ron Knott's multimedia web site on the Fibonacci numbers, the Golden section and the Golden string hosted by the Mathematics Department of the University of Surrey, UK. The Fibonacci numbers are The golden section numbers are 0·61803 39887... = phi = φ and 1·61803 39887... = Phi = Φ The golden string is 1 0 1 1 0 1 0 1 1 0 1 1 0 1 0 1 1 0 1 ... a sequence of 0s and 1s that is closely related to the Fibonacci numbers and the golden section. If you want a quick introduction then have a look at the first link on the Fibonacci numbers and where they appear in Nature. THIS PAGE is the Menu page linking to other pages at this site on the Fibonacci numbers and related topics above. Fibonacci Numbers and Golden sections in Nature Ron Knott was on Melvyn Bragg's In Our Time on BBC Radio 4, November 29, 2007 when we discussed The Fibonacci Numbers (45 minutes). listen again online or download the podcast. and phi . The Golden Section

Numbers on the mind: how maths can help explain the workings of our brain
Given that advanced mathematical training is critical for helping to solve some of the most challenging questions about the brain works, why are there so few mathematical neuroscientists? I hated biology when I was a kid. It was too messy, too shallow, too unprincipled for my taste, and I gave up studying it at school almost as fast as I could. Instead, I wanted to understand the general principles of how everything works. I wanted to be a theoretical physicist. But I also learned that physics had already been explored by too many great minds for the likes of me to make much of a contribution, so I looked for a new direction. Learning how we learn The first step came in the form of an opportunity to work briefly with Geoff Hinton, then at Carnegie Mellon University but now at Google. I then built neural network models of how the visual part of our brain develops. But by this time I was hooked on understanding the biology, the very thing I hated at school. Modelling how the brain works

12 Useful Math Hacks That They Didn’t Teach You In School
6. How To Figure Out What Day Of The Week Falls On What Date… You might be confused looking at the picture below, but the math is actually quite simple (albeit a bit elaborate). You’ll need the codes HERE, which will help you master this. July simply has a code of 5. 20th is 6 because 7 goes into 20 twice, which is 14. 20 – 14 = 6. 2069 is 2 because the leap year code of 2068 is 1 and 2069 is 1 year after, so that’s 2. The math can be difficult at first because there are a lot of codes, but it works out incredibly well once you pick it up. January 3, 2014 is a Friday, right? So, January, according to the table, is 6, and we handle days by using multiples of 7. We get 6 + 3 + 3 = 12 – 7 = 5! 7. via imgur / ayounes 8. Just count up in the tens column and down in the ones column. 9. Click HERE for more detailed instruction… 10. via Twitter / @LifeHacks Advertisement 11. Alligator always eats the bigger number!

12 Useful Math Hacks That They Didn't Teach You In School | Diply
12 Useful Math Hacks That They Didn't Teach You In... 12 Useful Math Hacks That They Didn't Teach You In School By Aunty Acid Life DIY L.Glee for Aunty Acid After finding these math hacks, I'm convinced that all those years of being forced to struggle through math class really was just a torture ploy created by evil math teachers everywhere. 1. As if it was this simple all along... via reddit/u/quaxon 2. Who knew? via imgur / MoonnMan 3. Finally! via WonderHowTo 4. Also a cool party trick. via 1000lifehacks What Did You Think? L.Glee For Aunty Acid Getting information off the Internet is like taking a drink from a fire hydrant - Mitchell Kapor More posts by L.Glee Verified Join Diply Today Connect with a social network Sign In to Diply Sign into your Diply account with your social network Report Post Select the option(s) that best described why this should be removed from Diply.