Puzzles are a hands-on way to explore simpler and complex mathematical relationships, for everyone from kids to calculus students.

All Number 1s are special, but scoring the Official Christmas Number 1 is the ultimate prize. The festive top spot is a British institution and is often the most unpredictable chart race of the year.

Adding larger numbers in your head is not always easy. If you need to use pen and paper, then the column method is a good way to add. It involves writing one number beneath the other, so that the ...

Abstract: With the integration of highly penetrative distributed photovoltaics into the distribution network, the imbalance between PV generation and load power becomes increasingly apparent, ...