30/09/2011 § Leave a comment
See the .pdf file of 6 degrees of separation for A Walk to the Jetty by clicking this link: Six Degrees of Separation – Kari.
19/09/2011 § 1 Comment
At first, I was a bit upset when we started learning about complex solutions because it meant that we could really no longer just write a simple “No Solution” as an answer for certain problems. Admittedly, I’m still a bit upset that there’s a bit more math to the work I’ll have to do during certain problems that involve finding the square root of negative numbers. The good part is that the concept of using i isn’t too hard; it simply takes a bit of time for me to find out what i-to-the-power-of-something will equal but usually I get it quickly.
One very good reason to have complex solutions is because the fact that it’s used commonly nowadays is sure sign of the potential of a human’s mental capacity. According to BetterExplained.com, “it is a testament to our mental potential that today’s children are expected to understand ideas that once confounded ancient mathematicians.” Also, although complex numbers are theoretical numbers that humans invent, they are useful and they fill in the blanks of numbers and ideas we don’t know how to explain completely. A little like negatives, there was a concept that was confusing and mathematicians in the past invented negatives or complex numbers to explain that concept as best as possible.
Also, complex numbers are useless when calculating headings and orientations (North, East, South, West). Again derived from the information from BetterExplained.com, instead of using cosine or sine, one can use complex numbers to find directions easily. (See the article for the actual explanation.)
I would think that using complex solutions in a quadratic simplifies a quadratic more. Instead of leaving the quadratic in its form with a negative in the discriminant, we could use i to simply it a little more and end the equation with two answers using that contain i. It’s more work but in my opinion, I think it cleans up the equation instead of leaving lots of numbers in there.
14/09/2011 § 1 Comment
I gave myself a low 9-10 range for this blog post; basically a 9. I think I deserve a nine on MYP criterion A because overall, I know these concepts and I am knowledgable about how it works. I gave a (very) thorough and accurate summary of the activities (maybe it was too thorough and too long but that doesn’t lose me any points so for now, it’s okay). I also provided a complete and correct list of the concepts we covered in both activities in little sections whenever the concepts were mentioned during the post.
I gave Nutcha a comment that I think was pretty helpful because she later came up to me and asked for my help to fix the grammatical errors in her blogpost. I think I helped improve her blogpost. In addition to the ‘way to improve your blog’ comment, I also complimented her on knowledge of her real-world connection and all the concepts.
I was able to connect all of our concepts to the activities we did in class but I feel like it wasn’t thorough enough. Maybe this is because I really should focus on the connecting of concepts instead of the summarizing next time — and I will be focusing on that next time. Also, I thought that my real world connection was quite developed but not to a level that it was fully developed. For example, I covered incentives, income and some consequences, but I could have worked a lot more on opportunity cost and trade-off.
I deserve a 6 for MYP criterion D: organization and presentation. I thought that the majority of the information was relevant; history on the black plague, background on the real-world connection, etc. but there might be a couple of sentences that are unneeded, like the narrations of what happened in class that I could have omitted.
I used a structure and tone during the blog that made it a little bit more interesting to read but was still informative and appropriate to the task. I sequenced the topics chronologically, therefore it is logically organized. It makes sense that I went through the activities and tasks in order of which was done first. I do pay attention to my audience – other students and Mrs. Welbes – therefore I made the reading a little more fun than a normal Economics Blogpost (which sounds boring). The presentations and expressions are clear but I feel that they’re not concise at all. I just think these three blogposts are really long and I want to stop that.
I documented all of my sources, including the graphic images that I thought would brighten up the blogposts (instead of having a lot, a lot, a lot of writing and nothing else) and the articles I read for my real-world connection. As mentioned: I think the language, style and visual representations (images pulled up from Google Images) are appropriate to the audience and purpose. But I still only deserve a 6 because the posts were so bloody long.