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Prometheus Books The Glorious Golden Ratio [978-1-61614-423-4] - "For centuries, mathematicians, scientists, artists, and architects have been fascinated by a ratio that is ubiquitous in nature and is commonly found across many cultures. It has been called the "Golden Ratio" because of its prevalence as a design element and its seemingly universal esthetic appeal. From the ratio of certain proportions of the human body and the heliacal structure of DNA to the design of ancient Greek statues and temples as well as modern masterpieces, the Golden Ratio is a key pattern that has wide-ranging and perhaps endless applications and manifestations. What exactly is the Golden Ratio? How was it discovered? Where is it found? These questions and more are thoroughly explained in this engaging tour of one of mathematics' most interesting phenomena. With their talent for elucidating mathematical mysteries, veteran educators and prolific mathematics writers Alfred S. Posamentier and Ingmar Lehmann begin by tracing the appearance of the Golden Ratio throughout history. They demonstrate a variety of ingenious techniques used to construct it and illustrate the many surprising geometric figures in which the Golden Ratio is embedded. They also point out the intriguing relationship between the Golden Ratio and other famous numbers (such as the Fibonacci numbers, Pythagorean triples, and others). They then explore its prevalence in nature as well as in architecture, art, literature, and technology. "

(Abstract only online, full text requires subscription) "The pipeline toward careers in science, technology, engineering, and mathematics (STEM) begins to leak in high school, when some students choose not to take advanced mathematics and science courses. We conducted a field experiment testing whether a theory-based intervention that was designed to help parents convey the importance of mathematics and science courses to their high school-aged children would lead them to take more mathematics and science courses in high school. The three-part intervention consisted of two brochures mailed to parents and a Web site, all highlighting the usefulness of STEM courses. This relatively simple intervention led students whose parents were in the experimental group to take, on average, nearly one semester more of science and mathematics in the last 2 years of high school, compared with the control group. Parents are an untapped resource for increasing STEM motivation in adolescents, and the results demonstrate that motivational theory can be applied to this important pipeline problem. "

Abstract: "The principal aim of this study is to find the weaknesses of secondary school students at geometry questions of measures , angles and shapes , transformations and construction and 3-D shapes. The year 7 curriculum contains 4 geometry topics out of 17 mathematics topics. In addition to this , this study aims to find out the mistakes, 28 , 7th grade students made in the last 4 exams including two midterms and two final exams.To collect data, students were tested on two midterms and two final exams using open-ended questions on geometry to analyze their problem solving skills and to test how much they acquired during the year.Frequency tables were used in data analysis.To fulfill this aim in the first midterm exam the subject measures were tested.In the first final exam which followed the first midterm exam in addition to measures and angles shapes skills were also tested. Following these tests , in the second midterm we tested the students on transformation and construction. A descriptive methodology and student interview were used in the study to analyze and interpret the results. The results from this study revealed that 7th grade secondary school students have a number of misconceptions, lack of background knowledge, reasoning and basic operation mistakes at the topics mentioned above."

The top five search tools for finding Flickr images are designed to help teachers and students locate just the right image for use in any subject area and project. Without these tools finding the right image on this image hosting site is often an impossible, or at least a tedious, task. The value of this site is its ability to provide digital pictures which are often impossible for a teacher to obtain any other way. Like everything else on the internet, trying to find something is like trying to find a needle in a haystack. This where the top five search tools become valuable resources for teachers and students trying to find images comes into play. These search engines are specifically designed to search the more than three billion pictures on the Flickr hosting site.

The University of Kansas has a wonderful math website designed for middle school students called Matrix Learning. In their words, Matrix Learning "provides resources to improve middle school reading and mathematics achievement through the development of interactive educational games." There are several interactive games/activities that are not only educational and engaging, but fun! There also are videos and mulitplayer games. Many of the activities would present well on the SB and some such as Definition Training- similar to hang man- would work well on the SB. I also would encourage you to check out the videos from the University of New Mexico that are on bottom left of the page. So if you are a middle school math teacher I would highly recommend that you take time to scope out this very worthwhile site. ENJOY!

"Stacey Roshan is using an approach dubbed by her students as the "backwards classroom."... The students watch pre-recorded lectures the night before the class, when homework problems are traditionally done, then spend the time in class getting answers to questions, working on additional problems with partners, and getting one-on-one assistance from the teacher. No more lectures in class." from The Backwards Class, by Dian Schaffhauser, THE Journal, 02/02/11

When the great mathematician Isaac Newton explained the colours of the rainbow with refraction the poet John Keats was horrified. Keats complained (through poetry of course) that a mathematical explanation robbed these marvels of nature of their magic, conquering "all mysteries by rule and line". But as we will see, the mathematical explanation, requiring just the basic geometry of lines and circles, is just as elegant as the rainbows themselves.

Published 2012. "Spherical trigonometry was at the heart of astronomy and ocean-going navigation for two millennia. The discipline was a mainstay of mathematics education for centuries, and it was a standard subject in high schools until the 1950s. Today, however, it is rarely taught. Heavenly Mathematics traces the rich history of this forgotten art, revealing how the cultures of classical Greece, medieval Islam, and the modern West used spherical trigonometry to chart the heavens and the Earth. Glen Van Brummelen explores this exquisite branch of mathematics and its role in ancient astronomy, geography, and cartography; Islamic religious rituals; celestial navigation; polyhedra; stereographic projection; and more. He conveys the sheer beauty of spherical trigonometry, providing readers with a new appreciation for its elegant proofs and often surprising conclusions. Heavenly Mathematics is illustrated throughout with stunning historical images and informative drawings and diagrams that have been used to teach the subject in the past. This unique compendium also features easy-to-use appendixes as well as exercises at the end of each chapter that originally appeared in textbooks from the eighteenth to the early twentieth centuries."

Published March 2013. "The Golden Ticket provides a nontechnical introduction to P-NP, its rich history, and its algorithmic implications for everything we do with computers and beyond. In this informative and entertaining book, Lance Fortnow traces how the problem arose during the Cold War on both sides of the Iron Curtain, and gives examples of the problem from a variety of disciplines, including economics, physics, and biology. He explores problems that capture the full difficulty of the P-NP dilemma, from discovering the shortest route through all the rides at Disney World to finding large groups of friends on Facebook. But difficulty also has its advantages. Hard problems allow us to safely conduct electronic commerce and maintain privacy in our online lives. The Golden Ticket explores what we truly can and cannot achieve computationally, describing the benefits and unexpected challenges of this compelling problem."

"Mathematician Shinichi Mochizuki of Kyoto University in Japan has released a 500-page proof of the abc conjecture, which proposes a relationship between whole numbers - a 'Diophantine' problem. The abc conjecture, proposed independently by David Masser and Joseph Oesterle in 1985, might not be as familiar to the wider world as Fermat's Last Theorem, but in some ways it is more significant. "The abc conjecture, if proved true, at one stroke solves many famous Diophantine problems, including Fermat's Last Theorem," says Dorian Goldfeld, a mathematician at Columbia University in New York. "If Mochizuki's proof is correct, it will be one of the most astounding achievements of mathematics of the twenty-first century." See additional commentary at: http://bit-player.org/2012/the-abc-game?utm_src=HN2

Addition is the mathematical operation, symbolized by +, of calculating the sum of two numbers or quantities. Best method of addition is the left to right mental addition method. The idea is simplify, simplify and simplify the problem by breaking the lower digits and added it to the upper digits. This method can also be used for sums where you have to carry a number forward.

Abstract: "Middle school students lack efficient problem solving skills due to several factors. The writing process has been linked to the development of students' problem solving skills. The present study investigated the impact of the writing process on the mathema tical problem solving skills for middle grades students. N = 96 students participated in a six weeks, after school STEM program, and they were randomly assigned into two groups: one focused on the writing process with mathematical problem solving and the o ther on homework/high stakes test preparation with mathematical problem solving. In this quantitative study, the results provide evidence that the students from the writing process group were more likely to generate and apply better problem solving skills as compared to the control group. This study further contributes to the support and importance of integrating different subjects across the generalized learning realm"

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Tips and tricks for the iPod Touch are needed to assist teachers in making the process easier when using this digital device for teaching and learning. As these digital devices become more widespread in classrooms, the need for more efficient use of these tools is coming to the forefront. This evolutionary course of action is resulting in more efficient and time saving strategies. The purpose of these 10 tips and tricks is to provide teachers, both novice and experienced, with features and applications (apps) designed to make an iPod Touch's functions easier to use. These features and apps offer the ability to customize this device to resolve management issues and integrate efficiently with other digital devices, such as a Mac laptop.

Here is where you'll find the course content for Spring, 2009. Assignments are here. Syllabus is here. GEOGEBRA: Throughout the notes, you will find many GeoGebra applets.  These are interactive Java applets.  To activate them, just click on them, and wait for the applet to load.  If you're using Internet Explorer, you may have to click on the "Allow ActiveX control" warning bar at the top of your browser, for the applet to load.  I encourage you to download GeoGebra yourself, or use the "Web Start" option, over at http://www.geogebra.org .  It's very easy to use, and a lot of fun!

A workshop scheduled in Berkeley, California, Feburary14-16, 2011. "The workshop will discuss what is important and unique to the publishing of mathematical research articles and how we can best ensure that publishing practices support peer reviewed research in the long term. Much of the current discussion is taking place between funders and publishers, including learned societies, but not directly with mathematicians. A second goal is to see if we can find a consensus of opinion on what is important about journal publishing to mathematicians, that is, where the balance lies between the desire for profits from publishing and the broader dissemination of research."

From the abstract: "We tested the hypothesis that certain aspects of nonperceptible Euclidian geometry map onto intuitions of space that are present in all humans, even in the absence of formal mathematical education. Our tests probed intuitions of points, lines, and surfaces in participants from an indigene group in the Amazon, the Mundurucu, as well as adults and age-matched children controls from the United States and France and younger US children without education in geometry. The responses of Mundurucu adults and children converged with that of mathematically educated adults and children and revealed an intuitive understanding of essential properties of Euclidean geometry." (Full text requires subscription.

It would be interesting to build a set a links to similar research results as this and discuss the implications this has for what we do as math teachers in our classrooms.

New research from Vanderbilt University has found students benefit more from being taught the concepts behind math problems rather than the exact procedures to solve the problems. The findings offer teachers new insights on how best to shape math instruction to have the greatest impact on student learning.

This just confirms what all the other research has been saying. The issue is getting all of us who didn't learn math conceptually, and who were not trained in college conceptually, to teach this way.

See real-time data on a host of topics important to daily life around the world!! * world population (e.g., births this year, deaths today, net population growth for today) * government and economics (daily government spending by category; computers sold) * society and media (new book titles published, money spent on video games, Google searches) * environment (forest loss, carbon dioxide emissions, current average temperature) * food (tons of food produced; people who died of hunger) * water (water consumed, people with no access to safe drinking water) * energy (solar energy striking Earth; oil pumped; oil, gas, and coal left) * health (deaths caused by alcohol, suicides, road traffic accident fatalities) Worldometers' algorithm takes the latest statistical data available from the United Nations (UN), the World Health Organization (WHO), the Food and Agriculture Organization (FAO), and other institutions, and then processes them together with its estimated progression to compute figures current up to the millisecond. Available in dozens of languages, this site is part of the Real Time Statistics Project. Read more about that here: http://www.realtimestatistics.org/

These pages demonstrate visual phenomena, and »optical« or »visual illusions«. The latter is more appropriate, because most effects have their basis in the visual pathway, not in the optics of the eye. When I find the time I will expand the explanations, to the degree that these phenomena are really understood; any nice and thoughtful comment welcome.