I'm working on a challenge problem that was posted at school. I'm not looking for an answer, but rather a nudge in the right direction to be able to figure the problem out on my own.<BR><BR>The ...

One of the formulas supported by Microsoft Excel is the sum of squares equation. To calculate the sum of squares using Microsoft Excel, you need to input a specific formula into the formula bar of the ...

Every so often it's good to exercise your brain with a math problem or two that forces you to recall principles you learned decades prior. As elementary as it might feel, you'd be surprised how easy ...

1. Fast and Slow Piles. This works well as a starting or closing activity. Students sort math fact cards into fast and slow piles. This visual way of tracking facts highlights which facts come ...

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

Rajeev Dhir is a writer with 10+ years of experience as a journalist with a background in broadcast, print, and digital newsrooms. David Kindness is a Certified Public Accountant (CPA) and an expert ...

Polygons can be regular or irregular in shape. A polygon is a closed 2D shape with at least three sides. A regular polygon is a polygon with all equal sides and angles. An irregular polygon is a ...