Welcome to the Mathematics Assessment Project News New – TRU Math: Teaching for Robust Understanding of Mathematics is a suite of tools for professional develompent and research - the alpha versions of these documents are available here… More International Awards for Team: Hugh Burkhardt and Malcolm Swan, leaders of the Shell Centre team, have been chosen by the International Commission on Mathematical instruction (ICMI) as the first recipients of the Emma Castelnuovo Medal for Excellence in the Practice of Mathematics Education. This complements the award by ICMI to Alan Schoenfeld of the 2011 Felix Klein Medal for Lifetime Achievement in research. Read more… The project is working to design and develop well-engineered assessment tools to support US schools in implementing the Common Core State Standards for Mathematics. Products Tools for formative and summative assessment that make knowledge and reasoning visible, and help teachers to guide students in how to improve, and monitor their progress. The Team What's on this site?
YAY MATH! Algebra Geometry Math Videos Online | Homework Help BetterExplained | Friendly lessons for lasting insight. Calculator for vectors, matrices, complex number, quaternion, coordinates, intersections, plotting Amazing Mathematical Object Factory AMOF, the Amazing Mathematical Object Factory, shown on the left, produces lists of mathematical objects in response to customer orders. Today you are a customer and you must tell AMOF what you want produced. This factory is totally non-polluting and the objects produced are absolutely free! (There is a vicious rumour however, that the workers are underpaid and overworked.) Click on a icon with an Indigo background, such as , to learn about that object, or on an icon with a Green background, such as to generate the object. , which appears both at the top and at the bottom of all succeeding pages. appears on every page as well; clicking on it will take you back to the SchoolNet home page. Combinatorial objects are everywhere! But what is a combinatorial object? There are many, many types of combinatorial objects and we work with just a few of them in AMOF.
Electrical Engineering News, Resources, and Community | EEWeb Community Factorization of Quadratic Expressions with Negative Coefficients ( Read ) | Algebra What if you had a quadratic expression like or in which some or all the coefficients were negative? How could you factor that expression? Watch This CK-12 Foundation: 0909S Factoring Quadratic Expressions with Negative Coefficients Guidance In the previous concept, we saw how to factor quadratic expressions whose coefficients were all positive. Factor when a = 1, b is Negative and c is Positive Now let’s see how this method works if the middle coefficient is negative. Example A Factor Solution We are looking for an answer that is a product of two binomials in parentheses: When negative coefficients are involved, we have to remember that negative factors may be involved also. but also and The last option is the correct choice. . The answer checks out. Example B The number 16 can be written as the product of the following numbers: The answer is In general, whenever is negative and and are positive, the two binomial factors will have minus signs instead of plus signs. Factor when a = 1 and c is Negative When
Stella's Problems Welcome to the ORC Stella website. The core of this collection is a library of more than 600 non-routine mathematics problems known as Stella's Stunners to be launched set by set over the coming months. The problems range from simple visual problems, requiring no specific mathematical background, to problems that use the content of Pre-Algebra, Algebra I, Geometry, Algebra II and Trigonometry, up through Pre-Calculus. The Stella problems are not typical textbook exercises. They are considered "non-routine" problems because the methods of attacking them are not immediately obvious. Because these problems can supplement and enliven traditional mathematics courses in a variety of ways, we have included materials to assist in using Stella problems in your teaching: The Stella problems were collected over many years by Rudd Crawford, long-time mathematics teacher at Oberlin High School, and have been used by a number of teachers across Ohio.