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Pre Service Teachers' Usage of Dynamic Methematics Software Authors: Mehmet BULUT Faculty of Gazi Education Gazi University Turkey mbulut@gazi.edu.tr and Neslihan BULUT Faculty of Gazi Education Gazi University Turkey mrsbulut@gmail.com As I was reading the beginning of the article and the way that the authors were explaining Geogebra software it reminded me more of Geometers sketch pad. There were the differences like Geogebra has a certain spot for algebra, graphing, and a spreadsheet. AS I kept reading I realized that this software was much more complex than sketch pad and I don’t think that I would really like this software to much after reading this article. The perk of this software is that it can be in English or in Turkish, which is much different than most soft wares. There was no students in this study but they did have teachers play around with is and each of the teachers likes a different aspect of the software. While I was reading this article I thought about all of the software that is very closely related. Like this software reminded me of sketch pad and fathom is sort of similar to sketch pad also but each of them are all different in many ways. I think that I would have to ask the author where this software came from and when it was created. Then after that I would ask him if he/she know about sketch pad and how similar they are. In the article it talks about how the lessons for this software are put online. So if there is a collection of them then what can be done is you can pick ideas off of them. This way you can modify them for your class and change them so that you can use them in the software that your school supplies.

Using Technology to Unify Geometric Theorems About the Power of a Point Author: José N. Contreras This article is about secondary mathematics teachers leaning about the power of a point P while using GSP. At first I thought that this article was going to be boring but as I read it, I was able to connect to it from the lessons that we did with sketch pad. I thought that this was an interesting article because they use sketch pad differently than we did. What they had to do was figure out if one tangent line was going to be equal to another tangent line. The students could do it on paper just fine, but when they saw it on sketch pad though it seemed much more confusing to them. They had to prove theorems differently and when the teacher showed them how to do it on sketch pad then they were able to verbally prove it from the picture that was shown. As I read this article at first I was wondering if the students had ever used sketch pad and then a few sentences down it said that they were used to sketch pad. Then I thought to myself how would the students know to use the theorems that the teacher was throwing out at them to prove in different ways, and that would be what I would ask the authors. Now that I see that there are ways that you can use sketch pad for more than just draw this shape on the computer and reflect it or do other things with it and my students could physically write things down in their notebook or I could give them a project then I can see myself using this in my classroom. I think that it would be a different way for them to learn more in geometry with using technology, which would be fun.

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