I created a rudimentary calculator using only marbles. Watch as I demonstrate its functionality and explore the concept.

Years ago, no math education was complete without understanding how to compute a square root. Today, you are probably just reaching for a calculator, or if you are writing a program, you’ll ...

Thomas J Catalano is a CFP and Registered Investment Adviser with the state of South Carolina, where he launched his own financial advisory firm in 2018. Thomas' experience gives him expertise in a ...

Editorial Note: We earn a commission from partner links on Forbes Advisor. Commissions do not affect our editors' opinions or evaluations. Disclaimer: Calculator results and default inputs are ...

See how much income you need for a $300,000 mortgage — or whatever home price fits your budget. Some or all of the mortgage lenders featured on our site are advertising partners of NerdWallet, but ...

For 30 years, the technology that could help save the world has been in the hands of children. Solar calculators were such a routine part of math class from the mid-1980s onward that they barely ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Marguerita is a Certified Financial Planner ...