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The Power of a Power law is demonstrated by Algebrahelp.com with several examples using numbers and variables. An online worksheet is available for extra practice.

Developed in collaboration between Maryland Public Television, MIT's Education Arcade, and FableVision. When you need a fresh approach to teach math to today-s tech-savvy youth, Lure of the Labyrinth comes to the rescue. A ground-breaking online learning game blends cutting-edge design, graphic novel storytelling and stimulating game play to plunge middle school students into a captivating 21st century learning adventure. Labyrinth's mysterious world unfolds when students encounter animated monsters and challenging math puzzles that deepen students' understanding of critical pre-algebra skills. Math topics: ratios, proportions, fractions, variables, number and operations

Robot Obstacle Course is an excellent introduction into programming for young kids. Students are presented with an obstacle course made up of colored blocks and keys. Students must program the robot to jump over the obstacles and pick up the keys to complete the course. Through the obstacle course, students are introduced to basic programming language and learn how to think like a programmer. The obstacles get progressively more difficult and more variables are added.

Interactive java applet for working with waves. You can change many different variables in the situation.

Wow! And free!

Tracker is a free video analysis and modeling tool built on the Open Source Physics (OSP) Java framework. It is designed to be used in introductory college physics labs and lectures. Features include: 1. Object tracking with position, velocity and acceleration overlays and data. 2. Video modeling with dynamic particle overlays and data. 3. Center of mass tracking with overlays and data. 4. Rotational motion data includes theta, omega and alpha. 5. Interactive graphical vectors and vector sums. 6. Line profiles for RGB analysis of spectra and interference at any angle 7. RGB regions for time analysis of RGB data 8. Flexible video calibration options. 9. Multiple reference frame views of collisions and other motions. 10. Video filters, including brightness/contrast, ghost trails, and deinterlacing. 11. User-defined constants and variables for plotting and analysis. 12. Data analysis tool with powerful automatic and manual curve fitting. 13. Full undo/redo with multiple steps. 14. Video converter for converting edited/filtered videos to mov, gif, jpg or png formats 15. Video exporter tool for recording videos with track overlays. 16. Copy and print images of any view for use in labs and other documents. 17. Paste web or other images directly into Tracker for analysis, save if desired. 18. Helpful hints for new and occasional users. 19. Drag-n-drop trk and video files to open.

A free resource for math review material from Algebra to Differential Equations. The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test. Browse the more than 2,500 Math pages filled with short and easy-to-understand explanations. Click on one of the following subject areas: Algebra, Trigonometry, Calculus, Differential Equations, Complex Variables, Matrix Algebra, or Mathematical Tables. You can find topics ranging from simplifying fractions to the cubic formula, from the quadratic equation to Fourier series, from the sine function to systems of differential equations - this is the one stop site for your math needs.