# Featured

## Reverse Add Rule for finding Palindromes

Given any number, you can use the following simple algorithm to find other palindromes.

Step 1:

## Palindrome Week, Words, n-digit numbers, odometer readings

**PALINDROME****: **In mathematics, a palindrome is a number that reads the same forward and backward. For example, 353, 787, 1331, 42724.

## What Is The Largest Number Smaller Than Five?

When my sons were in 11th grade at Dover/Sherborn High School, their AP BC Calculus teacher, Mr. Bridger, used to start every year with a question: “What Is The Largest Number Smaller Than Five?”

## Volume and surface area of Human Body, World Population of Living Matter

When doctors see patients, they almost always take two measurements first: height and weight. Yes, they want to track their patient’s progress but more importantly, they need to understand the patient’s volume and surface area for prescribing medicine.

## Volume of Rectangular Prisms, Cubes, and Platonic and Archimedean Solids

Every student is taught the formulas for the volume of a rectangular prism as length times width times height, the three dimensions of a rectangular prism. The answer must be give in cubic units.