## Why the Cost of Your Cereal Keeps on Rising

Posted: October 6, 2015 in Advance, Off the Beaten Math, Periods 1&2, Periods 3&4

Its price tag is rising faster than that of other groceries, at a time when cereal companies shrink its packaging and cut back on coupons. What’s behind the trend?

## 6.RP.A.1

Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.

## 6.RP.A.2

Understand the concept of a unit rate a/b associated with a ratio a:b with b ≠ 0, and use rate language in the context of a ratio relationship.

## 6.RP.A.3

Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.

## 6.RP.A.3a

Make tables of equivalent ratios relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane. Use tables to compare ratios.

## 6.RP.A.3b

Solve unit rate problems including those involving unit pricing and constant speed.