# Measurement Introduction

**Monday 10/20/08**

### Do-Now: Units of liquid measure

Suppose you are measuring some amount of liquid. Depending on how much you have, you may measure it in **pints**, **cups**, **gallons**, **quarts**, or a variety of other units.- Tell me what you already know about
**what these units are used for**.

- In the space below, rank these units in order from smallest to largest.

*(If you don't know how big one of them is, just leave it out)*

### What is the correct order?

- Based on seeing the units, what is the correct order?

- We can prove that that order is right by...

### I can measure the same thing with different units

- In order to
` ` something, I need to count how many of some ` ` will fit into it.

- Mathematically, what I am doing here is called
` `.

- The amount is written as
` `.

- The number is meaningless if I don't include the
` `.

- Measuring how much water is held by a two liter soda bottle:

- When I measure with a bigger
` ` I get a smaller ` `.

# Measurement Introduction Practice

### Will the number come out larger or smaller?

- A glass holds 3 cups of water. If I were to measure that in pints, it would be...

a) More than 3 pints

b) Less than 3 pints

c) Exactly 3 pints

- A container holds 4 gallons. If I were to measure that in quarts, it would be...

a) More than 4 quarts

b) Less than 4 quarts

c) Exactly 4 quarts

- A
**bushel** is a unit that is larger than a **peck**. If I pick 12 bushels of apples, that would be...

a) More than 12 pecks

b) Less than 12 pecks

c) Exactly 12 pecks

### Which unit is larger?

- One person measures that a barrel holds
**9 buckets** of water. Another person measures that it contains **4 firkins** of water. Which is larger, a bucket or a firkin?

- Three people measure the volume of a swimming pool. One measures it to be
**6 puncheons**, one measures it to be **4 butts**, and one measures it to be **8 hogsheads**. Rank the units **puncheon**, **butt**, and **hogshead** in order from smallest to largest.

- A dairy farm produces the same amount of milk every day. On Monday, Alice measures the milk and finds that
**20 barrels** were produced. On Tuesday, Bob measures the same amount of milk, but writes it down as **40 kinderkins**. On Wednesday, Charlie records the amount as **30 bags**.

Rank the units **barrel**, **kinderkin**, and **bag** in order from smallest to largest.

### Which measurement is a larger amount?

*If there is a larger number of the larger unit, you know that measurement is larger. If not, we have no way of figuring it out yet, and you should write "Can't tell."*- Which is larger: 2 cups or 3 pints?

- Which is larger: 12 cups or 2 quarts?

- Which is larger: 10 gallons or 7 quarts?

- Which is larger: 8 quarts or 12 pints?

- Which is larger: 6 gallons or 5 pints?