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# Ch 1.3 Measurement

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Author: Sarah Thompson
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Objectives:

- Perform calculations involving scientific notation and conversion factors

Identify the metric and SI units used in science and convert between common metric prefixes

Compare and contrast accuracy and precision

- Relate the Celsius, Kelvin, and Fahrenheit temperature scales.

N.12.A.1 Students know tables, charts, illustrations and graphs can be used in making arguments and claims in oral and written presentations.

N.12.A.2 Students know scientists maintain a permanent record of procedures, data, analyses, decisions, and understandings of scientific investigations.

NGSS Standards

What is so important about measurement?

The importance of measurements in science is the exactness. You can not verify laws, properties or science experiments without having exact measurements. If measurements are not given, and you try and recreate a project someone else did, you will not come up with the same result they did. In this section you will the learn about SI units, how to convert between units, and where units are applied throughout science.

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Tutorial

## Bill Nye the Science Guy - Measurement

Without measurement, people wouldn't know when the next bus was leaving, what shoe size they need or how hot the oven needs to be to bake a cake. The Science Guy examines different kinds of measurement, from figuring out the size of an atom to estimating the size of the planet. [28 minutes]

## Chapter 1.3 Measurement

Read Chapter 1.3 Measure Pg. 14-21. Outline the reading in your science notebook and include major points and diagrams/tables.
you should focus on the following essential questions:
- Why is scientific notation useful?
- What units do scientists use for their measurements?
- How does the precision of measurements affect the precision of scientific calculations?

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## Metric Conversions Using the Ladder Method

This is a very similar lecture to the one given in class on how to use the ladder method in metric conversions.

## Metric Conversion Using the Ladder Method

This is the handout to accompany the above youtube video on using the ladder method.

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## Chemistry - Metric Prefixes and How to Convert Metrics

Mr. Causey explains and demonstrates how to convert from one metric unit to another metric unit. You need to learn the prefixes and base values for the metric measurements. Learn how many times and in which direction to move the decimal according to the prefixes.

## Metric Conversion Rap - by The Metric Crew

Measurement - This is an introductory (or culminating) video that illustrates basic conversion between metric units of length and distance.

## Accuracy vs Precision

It is very important to fully understand the difference between these two terms... Watch this great clip after reading chapter 1.3 and then complete the worksheet below for added practice!

## Accuracy and Precision Practice

This is a great activity that will help you better understand the difference between accuracy and precision. I recommend working out the calculations by hand first and then checkin your work with a calculator because on the science proficiency exam, calculators are not allowed.

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