Determining the least expensive path for a new subway line underneath a metropolis like New York City is a colossal planning challenge—involving thousands of potential routes through hundreds of city ...

The bar model method is a great way to visualise tricky mathematical concepts and solve problems. They are a quick and easy way to represent a situation in a word problem. Bar modelling can be used to ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Ebony Howard is a certified public accountant and a QuickBooks ProAdvisor tax expert. She ...

Sometimes, determining which projects you should devote your time and energy to first takes energy you don’t have to spare (which is why I have tips for how to do it). But even when you know what ...

Simultaneous equations are two linear equations that can be solved using bar models. By remembering that the same letter will always have the same value we can work out the missing values. To solve ...

The idea that companies must “delight” their customers has become so entrenched that managers rarely examine it. But ask yourself this: How often does someone patronize a company specifically because ...

Everyone loves to indulge in a takeaway every now and then - and it's usually made even better when there are leftovers the following morning. It has prompted pizza lovers to share their best methods ...

Abstract: Since facial expressions convey important information about human feelings and emotions in a dangerous way, they are an effective means of human communication. It is a crucial part of ...