Wednesday, May 26, 2010

A Little Inquiry For Teachers

My summer begins Friday. One of my goals over the summer months is get my thoughts down about the mathematics behind the applet below. It is stunningly simple, but it is the details I want to make clear. So, I present it to you as a sort of summer inquiry activity for teachers. As you move the green points around and as you drag the purple-ish circle around and change its radius, what happens?



Follow Up: After sharing this with some of my students after one of their exams, they expressed a desire to be be able to place points and draw lines, so I updated the applet to reflect their wishes.

I was pleasantly surprised over how much time my students spent with this applet and the quality of their observations.




Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

2 comments:

  1. Hi there,

    My name is Liz. I am a blogger at thefactortree.com – an adaptive/interactive online math learning curriculum. We focus on students from the pre-k to the 6th grade. I apologize for posting the info on here but I was unable to find the contact information for you.

    I just came across your blog and thought you have some great content, so I wanted to reach out to you and see if you would be interested in checking out our site and providing us with some feedback? We’ve added new features, new blog content are currently working on revamping our site – the new version should be out by the end of the month. If you like our service (which is currently free to use- but not for long), would you be willing to write about it? Please let me know as that would be incredibly helpful for us. We are always looking to partner with other education online sources so we would very much appreciate your feedback. I hope to hear from you.

    Regardless, thanks for writing and enjoy your day.

    Thank you, Liz

    We hope you check out our Facebook.com/FactorTree and Twitter.com/FactorTree pages to get to know us better.

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  2. Hi there,
    I haven't heard from you, so I just wanted to check in with you and see how you are doing post super storm Sandy. I don't know if you or anyone you know has been affected but I hope you are doing well. Please let me know if you are at all interested in checking out our site, we would love some feedback and coverage if you like what you see.
    -Liz

    ReplyDelete