Students with visual impairments may face challenges when working on the Mathematics standards in the Common Core State Standards (CCSS). As a response to this, Perkins School for the Blind convened a panel of experts to identify specific standards that would be a potential challenge to students who are blind or visually impaired, and then proposed ideas for materials, foundational skills, tips and strategies, and lesson ideas to help to address these challenges.
This post is part of a series about different parts of the Mathematical standards.
The study of Ratios and Proportional Relationships are generally studied in 6th and 7th grades although the skills learned are applied throughout a students further math education
A ratio is a comparison of two things. A proportion is two ratios that have been set equal to each other 5/10 = 1/2.
A proportion is an equation that can be solved
The student will likely build tables of related quantities and find missing values
recognize and represent the connection between equivalent ratios, values in a table, and graphed ordered pairs to express unit rates using a variety of representations, given a contextual situation
identify that a proportional relationship intersects (0,0)
determine other points using (1, r)
to recognize and represent proportional relationships
use proportional relationships to solve multistep ratios and percent problems