Videos on Proportions
Overview
Explore Proportions in this free video unit. It is comprised of 7 lessons with 4-6 short videos in each lesson. Featuring the reasoning of Grade 6 students, the unit explores how to form and iterate ratios through the use of a dynamic applet. The videos provide a foundation for the Common Core State Standards about using ratios and rates to solve math problems. Showing these videos are helpful for teachers who want to move students from reasoning additively to forming multiplicative comparisons.
https://mathtalk.sdsu.edu/wordpress/mathtalk-for-students/proportional-reasoning-unit/