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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.

Get a new maths question to solve every day of the year with this superb site. It's great for lesson starters and the answer and explanation can be shown with the click of a button. Search questions for other dates by clicking the link at the bottom of the screen. http://ictmagic.wikispaces.com/Maths

A maths whiteboard resource about area and perimeter. Watch an explanation and then complete randomised questions with a virtual ruler to measure. http://ictmagic.wikispaces.com/Maths

Nice IWB resources

Includes nice IWB resources

A simple site with well written explanations, examples, worksheets and games of maths topics from across the curriculum. http://ictmagic.wikispaces.com/Maths

Explanations and examples of Singapore maths.

Great set of resources from David Little at Penn State. Easy to use java applets with explanation of usage ideas.

An explanation of mathematical exmples in everyday life and a review of the author's mathematical journey from primary school throughout his career. (Published in the US as Here's Looking at Euclid)

From the abstract: "This research examined the effects of the objectifying gaze on math performance, interaction motivation, body surveillance, body shame, and body dissatisfaction. In an experiment, undergraduate participants (67 women and 83 men) received an objectifying gaze during an interaction with a trained confederate of the other sex. As hypothesized, the objectifying gaze caused decrements in women'smath performance but notmen's. Interestingly, the objectifying gaze also increased women's, but notmen's,motivation to engage in subsequent interactions with their partner. Finally, the objectifying gaze did not influence body surveillance, body shame, or body dissatisfaction forwomen or men. One explanation for themath performance and interaction motivation findings is stereotype threat. To the degree that the objectifying gaze arouses stereotype threat, math performance may decrease because it conveys that women's looks are valued over their other qualities. Furthermore, interaction motivation may increase because stereotype threat arouses belonging uncertainty or concerns about social connections. As a result, the objectifying gazemay trigger a vicious cycle in which women underperform but continue to interact with the people who led them to underperform in the first place. Implications for long-term consequences of the objectifying gaze and directions for future research are discussed." (Full text available online (.pdf) )for now) ) (Winner of the 2011 Georgia Babladelis Best Paper Award)

Wow, what an amazing study!

A truly amazing flash based interactive and animated maths dictionary. The entries are clear and the explanations are well written that they are almost a lesson in themselves. A must for any maths teacher. http://ictmagic.wikispaces.com/Maths

" The customized interface creates a one-to-one learning environment with the professor while emphasizing graphical explanations and working through solution steps. Below each lecture video are detailed notes which highlight the most important points to remember as well as common student pitfalls. A powerful search engine also locates the exact time in a lecture your problem topic is discussed. Lastly, student comments are moderated by our instructors make sure any questions you have are answered."

Lure of the Labyrinth is today's innovative catch Lure of the Labyrinth is a game for middle school pre-algebra students designed to improve math and literacy skills. It includes intriguing math-based puzzles embedded in a narrative game in which students work to find their lost pet and save the world from monsters. Linked to mathematics standards, the game gives students a chance to think like mathematicians. Lure of the Labyrinth Home Page In Lure of the Labyrinth, students progress through three sections, or wings each related to a different math strand that is part of a the typical pre-algebra curriculum: * Proportions (including fractions and ratios) * Variables and Equations * Number and Operations (including geometry, order of operations and modular arithmetic) Each of the three wings includes three puzzles, and each of the puzzles has three levels progressing from easy to hard. Students have to successfully solve each puzzle three times before they can advance through the game. Lure of the Labyrinth Library Page A professional development video specifically designed for pre-algebra teachers takes them step-by-step through the things they need to do to make this engaging game the focal point of great classroom learning experiences. Planning resources include links to standards, directions for working with specific puzzles, lesson plans, explanations of the background math, and graphic organizers. Video - Lure of the Labyrinth Lure of the Labyrinth was created by Maryland Public Television and MIT Education Arcade in cooperation with FableVision.

For prealgebra students.

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.

"Making Every Maths Lesson Count is underpinned by six pedagogical principles - challenge, explanation, modelling, practice, feedback and questioning - and presents 52 high-impact strategies designed to streamline teacher workload and ramp up the level of challenge in the maths classroom. Throughout this book, Emma McCrea (through extensive research and practice) explores how to manage mathematical misconceptions with practical ideas on many areas of the required curriculum. The six pedagogical principles mentioned above form the heart of the book, with metacognitive questioning given space in developing cognitive strategies with pupils. "

In the portal you'll find a dynamic textbook, lesson plans, widgets, interactive Demonstrations, and more built by Wolfram education experts. Absolutely a great resource. Builds in representations, applets, explanations of variable use etc. Great tool.  Since it is in Beta, I am wondering how long it will be free and what their plans are for the future. 

"The cookbook contains a succinct representation of various topics in probability theory and statistics. It provides a comprehensive reference reduced to the mathematical essence, rather than aiming for elaborate explanations."

Largest database of question and answers on Aptitude and Reasoning covering Non Verbal Reasoning, Verbal Reasoning Logical Deduction, Verbal Reasoning Mental Ability, Quantitative Aptitude Arithmetic Ability, Quantitative Aptitude Data Interpretation.

I'm no slouch at maths, but this site has taught me lots. See videos of maths theories at the forefront of research presented in an understandable way. http://ictmagic.wikispaces.com/Maths

A short video from TED-ed and animation studio Augenblick

Teaching the world mathematics for free.

My blog. Contains intuitive explanation of mathematics topics ranges from elementary to undergraduate. Discussess integration of computers in teaching math. Lots of Tutorials: GeoGebra, Wordpress blogging, Geometer's Sketchpad, etc.