• Math
• 60 minutes
• Standards: 3.MD.A.2
• no ratings yet
July 22, 2015

This lesson introduces students to measuring and estimating liquid volume, using liters (l) as the standard unit of measurement.

### Learning Objectives

Students will be able to measure and estimate liquid volume, using liters as the standard unit of measurement.

## Lesson

### Introduction (15 minutes)

• Tell your students that they will learn about the liter (l), which is a metric unit of measurement, as opposed to a standard unit of measurement.
• On the board, write the word liter with its abbreviation l.
• Show the students the container with the capacity, or the space a solid, liquid, or gas takes up, of a liter.
• Ask your students where they might see the liter as a unit of measurement. For example, it is found on some grocery products such as canned goods.

### Explicit Instruction/Teacher Modeling (15 minutes)

• Demonstrate to your students what they will do in groups later.
• Collect everything you need for this activity: two medium-sized containers, one 1 liter container, a container of water, a plastic container or sheet to shield objects from water, and the worksheet.
• Give the containers names on the worksheet so that you can keep track of which container you're using.
• In front of the class, estimate if the medium-sized container can hold less than one liter, more than liter, or exactly one liter.
• Pour water into the medium-sized container until it is full.
• Then, to measure how much water you actually poured in, pour that water from the medium-sized container into the one liter container.
• Check the estimate and compare it to the actual result.

### Guided Practice/Interactive Modeling (5 minutes)

• Group the students in three to four groups of three to four students.
• Give each group two different medium-sized containers, one 1 liter container, a container full of water, and a plastic container or sheet to cover objects. Give each student one worksheet.

### Independent Working Time (15 minutes)

• Instruct your students to complete the activity and the worksheet as you modeled. Make sure they measure both of the medium-sized containers.
• Have them fill out the bottom of the worksheet.
• Walk around and observe the students as they work on completing the activity.
• Monitor the students as they work, making sure the activity is done appropriately.
• During this time, ask questions to make sure the students understand the concept of liquid measurement.

## Extend

### Differentiation

• Enrichment: Have more than two medium-sized containers available for your students.
• Support: Give your students a a smaller container that is less than one liter. Make sure your students understand "less than" before moving on.

## Review

### Assessment (5 minutes)

• At the end of the independent working time, ask your students to identify the medium-sized containers as less than, equal to, or more than one liter.

### Review and Closing (5 minutes)

• Ask for a spokesperson from each group to share the group's findings.
• After each group has shared the results of their activity, ask the class if there are any questions or comments.