Jane-Jane Lo, Tad Watanabe, Developing Ratio and Proportion Schemes: A Story of a Fifth Grader, Journal for Research in Mathematics Education, Vol. 28, No. 2 (Mar., 1997), pp. 216-236 ...

Male support engineer, brown hair, blue shirt, red tie: I'm calling regarding the problem you were having this morning with your email. Male, brown hair, white shirt: Our ratio of computers to ...

This project brings together researchers in embodied cognition with researchers and technologists in inclusive design. With the PhET simulation Ratio and Proportion, learners can explore finding and ...

This paper summarizes our analysis of the complexity of ratio problems at Grades 6 and 7, and reports a two-year experiment related to the teaching and learning of rational numbers and proportionality ...

Mathematician and comedian Matt Parker explores ratio and proportion including converting ratios into fractions. Suitable for teaching maths at GCSE and National 4 and 5.

THE strict theory of geometrical proportion is difficult, and, with few exceptions, elementary students are quite unable to understand it. Opinions differ as to the compromise that is best suited ...

Mystery of golden ratio explained Date: December 21, 2009 Source: Duke University Summary: The golden ratio is a geometric proportion that has been theorized to be the most aesthetically pleasing ...