263 sits in five different types of prime number: a balanced prime an irregular prime a Ramanujan prime a Chen prime and a safe prime. Balanced primes are primes where there are equal sized prime gaps above and below it. Other balanced primes are 5, 53, 157, 173, 211, 257 and 263. Irregular primes are […]
Plenty: 259=3²+5²+15²= 3²+9²+13² so, it can be expressed as the sum of three distinct squares in two different ways. It can be expressed as the sum of four cubes in two different ways. 259=2³+2³+3³+6³=1³+2³+5³+5³. It is semi-prime in that it is a number that is the product of two distinct primes: 7×37. I have had another […]
I’ve spent a lot of the day sat in front of a couple of laptops, making something secret – I can’t reveal without getting lynched by people – and completing a set of spreadsheets to analyse maths assessments. Fun. My next post will be unrelated to the 366 questions, just to warn you!
So, today is the 4th August 2016, which can be written as: 4/8/16 Or 22/23/24 Which I love!
This has nothing to do with today – which was mostly spent making spreadsheets for some assessments, alongside some of that teaching lark. I love the work of Matt Henderson, who posted this on his blog yesterday evening: A Reuleaux triangle is built from three circles. As it rolls, its height is always the radius of one […]
I am a fan of square numbers. Today is a totally square day, and it happens only once every few years. As I’m sure you know, a square number is arrived at by multiplying a number by its own self. So 2 times 2 is 4, and 3 times 3 is 9.4 and 9 are […]
A little project I’m developing needed a few different logos, so I made some. What do you think? They are for different year groups – linking the shape to the year by the number of sides etc. Thought that I could use different sized trees for the Key Stages as I began to do in […]
Nikola Tesla thought he could create a map showing all the multiplication patterns. Here it is: I love this and will be sharing it immediately with my children! Well, in the morning anyway.
In pieces. Pies are good. Icosahedrons are good. A cross between the two? That would be amazing. Find the instructions here.
Today, the 14th March, to Americans is Pir day – because they write the date 3.14… It is just the 14th March to us Brits. Anyway, here’s a short video explaining some reasons why pi is useful.