I wanted to surprise my wife for Christmas. She is a redheaded Harry Potter fan and mom, which inspired the idea to build a Weasley Clock. I got the idea in February, so I had 10 months to get the project designed and built. For those unfamiliar with Harry Potter and the Weasley Family, the Weasley wizard family owns a magical clock that instead of telling time shows the location of each family member with a separate hand. Here's an excerpt from Harry Potter and the Goblet of Fire (J. K. Rowling, 2000): Mrs. Weasley glanced at the grandfather clock in the corner. Harry liked this clock. It was completely useless if you wanted to know the time, but otherwise very informative. It had nine golden hands, and each of them was engraved with one of the Weasley family’s names. There were no numerals around the face, but descriptions of where each family member might be. “Home,” “school,” and “work” were there, but there was also “traveling,” “lost,” “hospital,” “prison,” an...
I have recently discovered Coursera . They offer hundreds of online courses in a wide range of subjects. Most courses are roughly equivalent to an semester-long undergraduate level course. Some are easier and some are equivalent to graduate-level coursework. I got started with Andrew Ng's Machine Learning (ML) course . I have been curious about machine learning, but a little biased against the field based on my limited knowledge of Artificial Intelligence (AI). My impression (and that of many others) has been that AI has long over-promised and under-delivered. However, recent advances in ML and its use in analyzing big data sets made its potential impossible to ignore. When I started the course, I did not know that Professor Ng had helped found Coursera. Nor did I realize the extent of his influence in the field of machine learning . Learning these facts gave added weight to his personal anecdotes about applying machine learning techniques. When Prof. Ng includes advice on...
One of my ongoing personal projects is discovering good techniques and tools for teaching math, science, and a problem-solving mindset to our two elementary school-aged kids. To that end, I recently read Dr. Barbara Oakley's excellent book: "A Mind for Mathematics: How to Excel at Math and Science (Even If You Flunked Algebra)." Dr. Oakley's own story is inspiring. She transformed herself from a math-phobe into a professor of engineering. This book is not your usual anecdotal self-help book. While the tone and writing are very casual, the material is completely scientific. All the information is based on the latest brain research, and the book includes a comprehensive bibliography. I did not need to read the underlying psychology and brain research papers to see the truth of what Dr. Oakley wrote. I found myself reflecting on my own successes and failures in learning. I’ve always considered myself naturally talented at math. I ended up with a BS in Ma...
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