# Featured

## Relative Distance of Planets and Size of Earth and Moon (10-27 thru 11-2)

The Mathletes discovered the relative distances of the planets from the Sun measured in Astronomical Units (AU). One AU

equals 93,000,000 miles, the distance from the Earth to the Sun.

Each student made an estimate of what they think the distances are of each planet to the Sun. Most students spaced the

planets out in equal distances the same way we usually view the Solar System in photographs severely not drawn to scale.

## Dollar Words discoverd by Mathletes this week

Shortest dollar word ever found: NUTTY

OTHER DOLLAR WORDS:

session, immature, quarter, mittens, turkey, wizards, raincoats, posting, excellent, smitten, starfish, telephone, a ultraviolet ray, your bar, a comstock, stoves, putter, verdicts, varnished, delivery, a phi rocks

## Polygonal Numbers (10/20-26)

A Polygonal Number is a number represented as dots or pebbles in the shape of a polygon.

Use the graph paper provided and make different colored dots to count the triangular and square numbers. Eventually, each Mathlete should know the first 20 square numbers as they are used throughout

## Dollar Words and the Numerical Value of Famous Quotes (10-13 thru 10-17)

What are Dollar Words? Assign a cent value to each letter. So, let a = 1 cent, b = 2 cents, c = 3 cents, and so on up to z = 26 cents. For any word, add up the cent values of its letters. If they sum up to $1, it's a $1 word. You may want to verify that "maximize" and "reciprocal" are $1 words.

## Anti-Nines and Addition Magic (10-6 through 10-8)

Anti-nines are pairing numbers that sum to 9 like:

0 and 9,1 and 8, 2 and 7, 3 and 6, 4 and 5, 5 and 4, 6 and 3, 7 and 2, 8 and 1, 9 and 0