I am not seeing the link either.

Lisa


On 3/31/08 11:08 PM, "QuickTopic daily digest"
<qtopic-19-Xcuv9kF9FgPgs@quicktopic.com> wrote:

>
< replied-to message removed by QT >

This time I will get the link in right away.

http://www.mathplayground.com/index.html

This one show how you can use technology to teach math. We already knew that.

I need some graphing calculator assistance. We are graphing systems of inequalities and I want to be able to use the calculator to locate the vertices of the solution. I tried using calc/intersect like we do with systems of equations, but it doesn't seem to work that way. We used the trace button to locate the vertices but when doing that you are basically guessing at the true intersection.

Can anyone help me here? Thanks, Colleen

try this link
http://www.keypress.com/documents/da2/Calc..._TI83-84Plus_05.pdf for explanations.
Diane
      _____

  From: QT - Colleen Confer [1] To: QT topic subscribers [2]
Sent: Wed, 16 Apr 2008 13:34:57 -0500
Subject: E2T2

< replied-to message removed by QT >

Thanks, Diane!
I had already loaded the application 'Inequalities', but it still doesn't do what I think it should be able to do. Maybe I am asking too much of this piece of technology.

I do appreciate your assistance!

Hi Colleen,

Since inequalities may have many points of intersection, the calculator cannot give you 1 solution. You probably need to change them (or do a new equation) so the calculator can give you the points that the lines intersect. That is really what you are looking for. The calculators are smart!
< replied-to message removed by QT >

In order to find all of the intersections with more than 2 equations or inequalities you must use the Calc - Intersect funtion more than once. The calculator does find each intersection (regardless of equation or inequalitiy) but one needs to make sure that they move between y1, y2, and y3, etc. Good Luck!!!

Tera

>Colleen:
If you want integer number solutions for the line, you can set the window accordingly (however if the line doesn't cross the axis at an integer, it won't show up). Here are the numbers to try in the window(I got these numbers from the NCTM conference in St. Louis--TI class):
Xmin=-47
Xmax=47
Xscl=1
Ymin=-31
Xmax=31
Yscl=1
Hope this helps!! Dyan
>
>
< replied-to message removed by QT >

I need some ideas...I, as you, have to put together my teaching portfolio containg artifacts supporting the teaching standards. I don't want a 'file pile', as I prefer a little more structure. Does someone have an idea or a sample for me to consider? I have been collecting things all year long and now I have my 'showcase showdown' to consider. Thanks, Colleen

I am teaching an ePortfolio class this summer at Halverson. Sign up online at the AEA website.

There are several teachers at Glenwood who have ePortfolios. Ask Nancy Dashner about hers. Renae Carey has one too.


On 4/24/08 9:36 AM, "QT - Colleen Confer"
<qtopic-19-Xcuv9kF9FgPgs@quicktopic.com> wrote:


Maryann Angeroth
Instructional Services Consultant
Loess Hills AEA13
mangeroth@aea13.org
712-366-0503 (office)
402-290-2027 (cell)
< replied-to message removed by QT >

I NEED HELP!

I have a lesson due by Friday and I am not understanding just exactly what I am being required to do. Here is the situation:

Given:

 The practical applications of ratio, proportion, and percent in real-world situations are so numerous that students need to acquire the ability to perceive and determine relationships between these concepts.

 Task:

A. Using the attached lesson plan format, design an original lesson plan to teach proportional reasoning when solving percent problems in grades 5–8.
 
B. In your lesson plan, include activities that allow for the following experiences:

1. Students discover, develop, derive, and conceptually understand the cross-product algorithm via conceptually based approaches such as the line segment model.

I'm not sure that I conceptually understand the cross-product algorithm.

Can anyone shed light on me or direct me to a resource that may help me?

Thanks!

Hi Colleen,
I could give you a technical reason for why you cross-multiply but that wouldn't do much for the "understanding" part of the lesson. I had a few minutes before we have to leave for the infusion center and I found these two web sites that may shed some light on what you want.
www.eduplace.com/math/mathsteps/6/a/index.html
And www.homeschoolmath.net/teaching/proportions.php
The second one is pretty good. It uses tables a lot to develop the proportional thinking. I couldn't find anything as of yet to do with the line segment model. Will look later when we get home but it will be late so I don't know how much more help I'll be. Good luck.
Ron

< replied-to message removed by QT >

In you navigations books for Number and operations on the CD is a journal article call Two Balloons for One Dollar....it is a great article and talks about the four types of proportional reasoning problems and how to know what level kids are on. I've developed a sort of rubric that I shared with my E2t2 teachers last week....I think Tera will share it on Nov. 3. If not let me know and I will send it to you.

Those of you who ordered the CPS (clicker system).... have your batteries all died already? We haven't used them THAT much and I have had to replace half of the batteries.

On the clickers: Yes, all of the batteries have died on my clicker set. We have had to replace them all.

Off Road Algebra: Math Matters
Pre-algebra and algebra students can now work through problems while watching motorcycle racing videos. HotChalk.com has created Off-Road Algebra. The videotaped motocycle exploits provide students with real-world problems and step-by-step solutions with examples.
Colleen I thought this would be right up your alley.

http://www.hotchalk.com/mydesk/index.php/math-matters