Peer Review

Videos on Proportions

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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 is helpful for teachers who want to move students from reasoning additively to forming multiplicative comparisons.
Type of Material:: Collection
Recommended Uses:: This site can also be used as a lecture or an exercise on learning through observing others solving the problem. Seems like a great resource for self directed study as well.
Technical Requirements:: Any browser.
Identify Major Learning Goals:: The purpose of the collections is to teach Proportions through observing students talking through solving and reflecting on the problem.
Target Student Population:: Middle School and High School.
Prerequisite Knowledge or Skills:: Basic proportions.

Rating:
Strengths:: It is a great material to make sense of proportional reasoning in a speed context. Each lesson or unit is self contained and can be used for demonstrating math thinking along with the concept talked about. It also has a task sheet with questions and a link to applet for the learner to follow along.
Concerns:: There are no concerns with the material, but the biggest use case for watching all the videos is self study.

Rating:
Strengths:: This material can be used in class for demonstrating not only the concept but also math thinking skills. This unit is valuable for students, professionals and academics who want to study the thoughts of students whom review proportions.
Concerns:: None

Rating:
Strengths:: It is very intuitive to use. No problems related to useability. Through a series of activities students move from reasoning additively to forming multiplicative comparisons. The subtitles are available in Spanish and any other languages!
Concerns:: None