1. People hate math if they do not understand it.
2. I like math because I like to solve problems using logic. Before BTW, I went to a TAG school where academics were difficult and interesting. Now, I still find new things that exercise my brain and inspire me.
3. Math is important for many artists, including architects, designers, and composers.
4. I think math education can improve if teachers graded based on progress as well as scores.
Wednesday, September 23, 2009
Friday, September 18, 2009
Scatter Plots
Scatter plots can be used to show many types of data in numerous ways. At a TED conference, Hans Rosling created a scatter plot to show his data about the death rates in both developed and third world countries. He added many features to his graph that made it interesting.
Mr.Rosling created his graph to determine whether or not third world countries had a shorter lifespan and more childreen than developed nations. In his graph, Mr.Rosling made the independent variable the number of children per woman and the dependent variable life expectency. He represtented countries with dots on the graph, colorcoding them by continent and sizing them by population.
When he ran the program, the graph showed that, at first, the third world countries had many children and a short lifespan, while developed countries had few children and a long lifespan. However, as the years passed, most of the third world countries started to have fewer children and to live longer. This shows that, while the general opinion that third world countries have short lifespans and many children is still true about some, most nations have changed until the majority of the world has few children and long lifespans.
Mr.Rosling created his graph to determine whether or not third world countries had a shorter lifespan and more childreen than developed nations. In his graph, Mr.Rosling made the independent variable the number of children per woman and the dependent variable life expectency. He represtented countries with dots on the graph, colorcoding them by continent and sizing them by population.
When he ran the program, the graph showed that, at first, the third world countries had many children and a short lifespan, while developed countries had few children and a long lifespan. However, as the years passed, most of the third world countries started to have fewer children and to live longer. This shows that, while the general opinion that third world countries have short lifespans and many children is still true about some, most nations have changed until the majority of the world has few children and long lifespans.
Friday, September 4, 2009
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