http://www.cnn.com/video/api/embed.html#/video/world/2014/11/13/natpkg-worlds-tallest-man-meets-worlds-shortest-man.guinness-world-records

## 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.

## 6.RP.A.3c

Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.

## 6.RP.A.3d

Use ratio reasoning to convert measurement units; manipulate and transform units appropriately when multiplying or dividing quantities.