# [Surfnetkids Newsletter] Prime Numbers … Pls Fwd

Surfing the Net with Kids FREE Newsletter
http://www.surfnetkids.com/emailedition.htm

1. Introduction
2. Sponsor’s Spot: Finally, an Easy Way to Integrate the Internet into Your Curriculum
3. Weekly Topic: Prime Numbers
4. Note from a Subscriber
5. Related Games
6. Quote of the Week
8. Subscription Management

#1. November 17, 2004

After my forays to Pittsburgh and Cleveland (with a weekend at home in San Diego in between) I arrived home with a terrible cold. Or so I thought. After a week of feeling worse and worse, I went to my doctor. Now, after three days of antibiotics, I am finally feeling better. Hooray! Travel is expensive in more ways than one. I think it was a combination of exhaustion and breathing all those recycled airplane germs.

Two more quick notes. First, I found a cute talking turkey Thanksgiving e-card:
http://cards.cardfountain.com/ecards/talkin-turkey/

Next, although I love getting comments on my three blogs, I hate getting comment spam even more. So in order to protect my sanity, I have implemented a registration system. Please stop by and register. The same TypeKey registration works on all three blogs. I’d love to hear from you.

Surfnetkids Journal
http://blog.surfnetkids.com

Welcome to My Office
http://www.barbarafeldman.com/

See ya on the Net,
Barbara J. Feldman
"Surfing the Net with Kids"
http://www.surfnetkids.com

#2. Finally, an Easy Way to Integrate the Internet into Your Curriculum

If you know the right sites, the Internet can be a powerful blessing that sparks a passion for self-directed learning. But which sites do you recommend? How do you find them? Let me help you.

http://www.surfnetkids.com/printables-club.htm

#3. Prime Numbers

by Barbara J. Feldman

Prime Numbers Printable (** for premium members only)

An integer (greater than one) is prime if the only whole numbers it can be divided by (without a remainder) are itself and one. All other integers are composite. In other words, a prime number has only two positive factors. Composite numbers have more. For example, seven is a prime number because its only positive factors are one and seven. Fifteen is composite because it has four: one, three, five, and fifteen.

Eratosthenes’ Prime Number Sieve
http://www.faust.fr.bw.schule.de/mhb/eratclass.htm

Eratosthenses was a Greek mathematician who figured out that to find all the prime numbers between two and some large number, you need to remove all the multiples of each number between two and your large number. Start by pressing “2″ (skip over “1″), and you’ll see all the multiples of two eliminated: 2,4,6,8, etc. Next, click on “3″ and so on. At some point the program will stop, and all the prime numbers between 2 and 400 will be colored red. Can you guess the biggest number you will need to click?

Dr. Math: Prime Numbers
http://mathforum.org/dr.math/faq/faq.prime.num.html

“A prime number is a positive integer that has exactly two positive integer factors, 1 and itself. For example, if we list the factors of 28, we have 1, 2, 4, 7, 14, and 28. That’s six factors. If we list the factors of 29, we only have 1 and 29. That’s 2. So we say that 29 is a prime number, but 28 isn’t.” Dr. Math presents an excellent introduction to prime numbers, the Sieve of Eratosthenes, and links to other prime number sites.

FactMonster: Prime Numbers
http://www.factmonster.com/ipka/A0876084.html

Fact Monster begins with a short prime number lesson, and a table of all the prime numbers between 1 and 1000. On the next page (“World’s Largest Known Prime Number”) is a simple explanation of Mersene primes, and the search for bigger and bigger primes. Although there are an infinite number of primes, it is only with today’s computing power can we actually name them. In fact, the Electronic Frontier Foundation is offering is a \$100,000 reward for finding a prime number with at least 10 million digits.

#4. Note from a Subscriber

Dear Ms. Feldman,
I ordered and read your e-book “How to Add Games to Your Site” this summer. I am a PTO volunteer with my kids’ elementary school.

Every year our school does a Geography Expedition, where the students follow the adventures of “Kate and Sam” as they travel with figures from history. This year, “Kate and Sam” are traveling with Lewis and Clark. I wanted to make sure the online version of our Expedition was something special and studied your book over the summer. Below is a link to the result.

http://www.sudbury.k12.ma.us/%7Eptonixon/lewis_clark/
Everyone has been wowed by the result and it is in large part due to your book.
Thanks so much for this resource!
Sincerely,

Dear Lisa,
Barbara

**Printables Club members get 6 to 9 recommended sites (instead of the 3 included in this free newsletter) and
oodles of additional educational content with the Surfnetkids
http://www.surfnetkids.com/printables-club.htm

#5. Related Games

Sieve of Eratosthenses
http://www.surfnetkids.com/games/sieve.htm

Printable Multiplication & Division Word Search
http://www.surfnetkids.com/printables/Word_Searches/multiplication-ws.pdf (** for premium members only)

Multiplication Flash Cards
http://www.surfnetkids.com/games/multiplication-fc.htm

Multiplication & Division Word Search
http://www.surfnetkids.com/games/multiplication-ws.htm

(Learn how to make games just like these with my step-by-step manual. )

#6. Quote of the Week

“Joy is not in things! It is in us!” ~~ Benjamin Franklin (1706 – 1790) American statesman, inventor, and scientist

Click below for more on Benjamin Franklin:
http://www.surfnetkids.com/related.php?t=Benjamin+Franklin

Daily Education Quote via Email
http://www.surfnetkids.com/quotations/

http://www.publicdomainriches.com/go/offer1104

Corey Rudl’s Ultimate Seminar: Discover the simple secrets REAL people — just like YOU — use to create wealth with the Internet
http://www.marketingtips.com/ultimate/t/796222

Online games turn ordinary school assignments into interactive fun.
Show your kids how to author word searches, jigsaws and
crossword puzzles.

Personal Medical Alert pendant will call for help
even when you can’t reach a phone.
http://www.PioneerEmergency.com

Get Awesome Grades in Math and Science.

FUN GIFT IDEA: Puzzle Clonzz jigsaw paper for printing
forty-piece jigsaw puzzles from your computer printer.
http://surfnetkids.com/puzzleclonzz.htm

Coupons, Deals and Bargains … new items everyday
http://coupons.surfnetkids.com

http://www.surfnetkids.com/ratecard.htm

#8. Subscription Management

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http://www.surfnetkids.com/emailedition.htm

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