Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Professional Associations » nyshsmath

Topic: Re: Special Right Triangles
Replies: 17   Last Post: Nov 4, 2008 7:28 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Kathryn Brennan

Posts: 1
Registered: 10/30/08
Re: Special Right Triangles
Posted: Oct 30, 2008 12:44 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

How cool was that...I can't stand it! Only people like ourselves could like that!!! I am going to show my Basic Geometry kids that as we just covered the Pythagorean Theorem.

Thanks,
Kathy

>>> "Nanette DeGroat" <NDeGroat@gcsny.org> 10/30/08 6:49 AM >>>
Hello Eric,

This is great. Could you send me your other material?

Thanks Nanette DeGroat

>>> "Eric O'Brien" <eobrien19@yahoo.com> 10/29/2008 6:30 PM >>>
Loretta,

Whenever possible I try to teach kids about wonderful patterns relating to Pythagorean triples.

Look at this infinite list of triples, beginning with 3 4 5:

3 4 5
5 12 13
7 24 25
9 40 41

Questions for students: What patterns do you notice as you look down the columns? Based on these columns, what patterns do you recognize? What is 3 squared? (9) Can you name two consecutive numbers with a sum of 9?(4 and 5 -hey, wait a minute!)
What is 5 squared? (25) Can you name two consecutive numbers with a sum of 25? (12 and 13 - Wow! Does this happen all the time?) Do you see any patterns building?

If this is of any interest to you, let me know and I'll share another chestnut on special triangles.

Eric O'Brien
*******************************************************************
* To unsubscribe from this mailing list, email the message
* "unsubscribe nyshsmath" to majordomo@mathforum.org
*
* Read prior posts and download attachments from the web archives at
* http://mathforum.org/kb/forum.jspa?forumID=671
*******************************************************************

*******************************************************************
* To unsubscribe from this mailing list, email the message
* "unsubscribe nyshsmath" to majordomo@mathforum.org
*
* Read prior posts and download attachments from the web archives at
* http://mathforum.org/kb/forum.jspa?forumID=671
*******************************************************************

*******************************************************************
* To unsubscribe from this mailing list, email the message
* "unsubscribe nyshsmath" to majordomo@mathforum.org
*
* Read prior posts and download attachments from the web archives at
* http://mathforum.org/kb/forum.jspa?forumID=671
*******************************************************************



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.