Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about ...

A simple finger trick for the 11 times table is helping secondary school students aged 12 to 16 improve mental arithmetic ...

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

In this method the smaller number is partitioned (broken down into tens and units). \({27}\) is broken down into \({10}\), \({10}\) and \({7}\). The method of partitioning into tens, simplifies the ...

For over a decade, mathematicians have failed to agree whether a 500-page proof is actually correct. Now, translating the ...

19 is only 1 away from 20, so you prefer to start by multiplying 20 times 5, which equals 100. Then we need to take away a squadron of 5, because there are actually only 19 squadrons, not 20. 100 take ...