A lesson plan for teaching third graders about measuring with metrics

Subject: Math

Grade Level: 3

Topic: Measuring with Metrics

Learning Objectives:

• Students will be able to define the terms "metric system" and "metric units."
• Students will be able to identify the metric units for length, weight, and volume.
• Students will be able to convert between different metric units.

Materials:

• Whiteboard or projector
• Markers or pens
• Pictures of objects with metric measurements
• Metric rulers, scales, and measuring cups (optional)

Procedure:

1. Begin by asking students what they know about measurement. What are some units of measurement that we use?
2. Write the terms "metric system" and "metric units" on the whiteboard or projector. Explain to students that the metric system is a system of measurement that is used in most countries around the world. Metric units are based on multiples of 10, which makes them easy to convert between.
3. Show students pictures of objects with metric measurements. For example, you could show a picture of a ruler that is marked in centimeters, a scale that is marked in grams, or a measuring cup that is marked in milliliters.
4. Explain to students that the metric units for length are centimeters, meters, and kilometers. Centimeters are the smallest unit of length in the metric system. Meters are a bit longer than centimeters, and kilometers are even longer than meters.
5. Explain to students that the metric units for weight are grams, kilograms, and metric tons. Grams are the smallest unit of weight in the metric system. Kilograms are a bit heavier than grams, and metric tons are even heavier than kilograms.
6. Explain to students that the metric units for volume are milliliters, liters, and cubic meters. Milliliters are the smallest unit of volume in the metric system. Liters are a bit larger than milliliters, and cubic meters are even larger than liters.
7. If possible, have students practice measuring objects using metric units. You could provide them with metric rulers, scales, and measuring cups.
8. Conclude the lesson by asking students to write a paragraph about what they learned about measuring with metrics.

Assessment:

• Observe students' participation in class discussion.
• Check students' understanding of metric units by asking them questions.
• Collect students' paragraphs (optional).

Differentiation:

• For students who are struggling, provide them with more practice measuring objects using metric units.
• For students who are ahead, challenge them to research the history of the metric system or to create a presentation about the metric system.

Extensions:

• Have students create a metric measurement chart that shows the different metric units for length, weight, and volume.
• Take students on a field trip to a grocery store or hardware store to see metric units in use.
• Have students write a poem or song about the metric system.