# Measurements in Science

#### Time Frame

6 class periods of 45 minutes each

Large Groups

#### Life Skills

• Thinking & Reasoning
• Communication

MARVIN LOWE

### Summary

This lesson plan will enable the students to develop an understanding of the importance of a standardized system of measure. The tools used to make measurements in science will be introduced. Students will learn the metric system of measurement, why it is important for all to use, and will have practice in the use of the metric system to include conversion from one size unit to another size unit using the metric ladder. This will be acomplished by student involvment in lab experiences, internet research, internet practice sessions both practicing the use of metrics and practicing the knowledge base about metrics. The last part of the lesson plan will require that students demonstrate a proficiency in both critical metric system knowledge and metric system use to include the use of metric measurement tools. While the eighth grade core does not require instruction directly in the use of various tools to measure metric units and does not require that students be taught to convert from one size metric unit to the other, it very definately does show an expectation that the students will perform measurements of various kinds that are or should be done using metric units. Since most eigth grade students do not know how to use appropriately either the metric system or the various metric measurement tools used to measure in the metric system it becomes necessary for the instructor to teach the student not only how to use the metric system and to convert from one size unit to another but also to instruct the student in the use of various metric measurement tools. Also the metric system is not in any other science core prior to the eighth grade and is not in any math core that I could find. If we are going to expect that students to use the metric system in the eighth grade core to measure those things in the following core objective areas, then we must teach it to them.

### Materials

Metric Rulers, Metric Balances, and Graduated Cylinders

### Background for Teachers

The instructor should have a basic working knowledge of the metric system before attempting to use this lesson plan. The student need know very little about the metric system.

### Intended Learning Outcomes

1. Students will recognize the need for a standard system of measurement. 2. Students will develop a clear understanding of the metric system. 3. Students will learn to convert metric units from one size to another. 4. Students will demonstrate the ability to use the appropriate tools to make scientific measurements using the metric system. 5. Students will enhance their observation skills by being able to better quantify what they are observing. 6. Students will learn the set of knowledge that will be necessary for them to have in order to complete successfully the various metric measurement portions of the eighth grade core. 7. Make observations and measurements (uses instruments as appropriate). 8. Use reference sources to obtain information (library data bases, handbooks, encyclopedias, internet information sources etc.)

### Instructional Procedures

#### Websites

• Metric System and Unit Conversion
A concise source about the metric system that is designed to teach it to students of all ages.
This site has a set of four activities that will enable students to practice metric conversions using their metric ladder. It is set up in a game format.
This site has four activities designed to help the student practice their basic knowledge of the metric system and it's application to science. It is in a game format.

### Extensions

1. As you continue through the core, your students will be able to get conciderablly more out of those sections of the core that require the use of the metric system and metric measurement tools. 2. Students will begin to apply the metric knowledge they have gained to the real world around them.

### Assessment Plan

1. The assignment that the students did with the metric internet page can be graded for assessment. 2. The Metric Madness 1 and 2 can be used for assessment because the number correct and incorrect is automatically tallied for you as the students go through the activities. This also allows the student to carry on self assessment and attempt to improve his or her score without actually hurting their grade. 3. The final assessment tools should be designed by each instructor as each instructor will stress different portions of the metric information. At the least it should include a test of their ability to use, the metric ladder or Dimensional Analysis to convert metric units from one size to another, appropriate metric tools for measurement, and a good basic knowledge of the metric system.

Created: 04/26/1999
Updated: 02/05/2018
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