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over 6 million graded exams to date and over 300,000 participating students. What we believe in: Clean, quality, easily accessible, educational software for every school and child regardless of geographic location or economic class. What we don't believe in: Games, advertising, fees, spam or gimmicks. That Quiz is free for educational use.

Large collection of math activities, lessons, standards, and web links from the NCTM

"This is a rather unusual structure for organizing mathematical content, but offers an exciting opportunity for teachers across the nation and abroad to exchange ideas and discuss what they teach. This Wiki will address the underlying central concepts and propose activities that also provide rich opportunity to engage students in the Mathematical Practices. "

A platform combining a searchable database of the "Jahrbuch �ber die Fortschritte der Mathematik" (1868-1942) and digitized mathematical publications from the Digital Library Göttingen. Cannot tell if the project is active or being updated at the moment.

In this lesson, students learn how to measure the area of the tire footprint on a car and to find air pressure using a tire gauge. Students then find the weight of the car using their fraction multiplication skills. Learning Objectives   Students will: Estimate weight of a large object Use a ruler and a tire gauge to take measurements Collect and record data Review square units of measure Calculate area by multiplying fractions Materials   Strips of poster board Ruler Tire gauge How Much Does a Car Weigh? Activity Sheet Computer with internet connection Car Instructional Plan In preparation for this lesson, place a car in a safe lcation for the students to measure the tire footprints and pressure. In case of bad weather, find a covered location. Be sure to measure the tire footprint and the pressure (in PSI) of each tire ahead of time, so that you will be able check the accuracy of students' measurements. Also, check the accuracy of your calculation by comparing to it to the weight of the car listed on the sticker inside the driver's door or in the vehicle manual. By the end of the day, data may change because air has leaked out of the tires while students were using the tire gauge. For safety, check the tires before driving home.

Nice set of instructional activities/lessons that have dynamic or interactive aspects to them. Would take some study to be able to use effectively, but a good resource.

Online binder of activities created by Kelly Hines for her students. She uses this site (livebinders.com) to organize her online learning for her students. This is just a good example of what an online binder might look like. 

"inspired by scienceblogging.org" "We listed all blogs we know, which seem to be active, are at least partly about mathematics, and offer a feed"

This is a superb site with thousands of well designed cross curricular activities, whiteboard resources and videos to use in your class. Best of all, it is free for teachers. http://ictmagic.wikispaces.com/Cross+Curricular

Our activities during Mathematics Week focus attention on Mathematics and Mathematics Education with the aim of making Mathematics more interesting, attractive, relevant, challenging, rewarding and engaging to learners and the community at large, e.g. by highlighting the impact of Mathematics on our daily lives and stressing the importance of Mathematics as a foundation for careers in science, technology and managerial jobs. Mathematics Week is a vehicle to popularise Mathematics and to increase public awareness, understanding and appreciation of Mathematics.

Do-it-yourself designs

Project based learning using all or any of the three online resources offers a dynamic approach to teaching in which students explore real-world problems and challenges.