What's new

number posts

A giant step for twin primes News

by David, 10 July 2013 | 0 comments

Dr. Yitang (Tom) Zhang

Three and five. Five and seven. Eleven and thirteen. Prime numbers often appear as twins, only two apart. For hundreds of years, mathematicians have wondered – is there a biggest pair of twin primes, or does the list of twins keep going forever?

Continue reading A giant step for twin primes

Categories:

Napier’s bones Activity

by David, 18 June 2013 | 0 comments

four strips of paper with numbers on them. The top number on each strip is highlighted - 4, 6, 7, 0

How did people multiply before calculators were invented? You could try doing it in your head, but you could also use a mechanical calculator, such as this set of Napier’s bones.

Continue reading Napier’s bones

Categories:

How much is lots? Activity

by David, 25 March 2013 | 0 comments

Almost everyone uses the word lots, but what does it mean exactly? the only way to find out is to ask people!

Continue reading How much is lots?

Categories:

Counting spirals Activity

by David, 16 February 2013 | 0 comments

There are some pretty amazing patterns lurking in nature. Do a bit of arithmetic and master the Fibonacci sequence, and then see where you can find it!

Continue reading Counting spirals

Categories:

Fibonacci fruit Activity

by Mike, 16 January 2013 | 0 comments

Having trouble finding a four-leafed clover? This activity explains why! If you’re getting ready for some gardening, keep this activity in the back of your mind as you marvel at Mother Nature’s mathematics.

Continue reading Fibonacci fruit

Counting gears Activity

by David, 4 December 2012 | 0 comments

Foam gears with numbers written on them

This crafty cog activity will get your mind spinning and help you learn more about how we count. Safety: This activity uses a craft knife. Ask an adult to help.

Continue reading Counting gears

Categories:

Pizza brainteaser! Brainteaser

by David, 1 November 2012 | 3 comments

Pizza delivery man holding a pizza

Mario has a whole pizza that hasn’t been cut. He cuts the pizza in half, and then cuts each of those pieces in half to make four pieces. He then cuts all of those slices in half, and then those in half and so on.

Continue reading Pizza brainteaser!

Categories: