Grade 3 Lesson Plan: Measuring Mass in Kilograms

Subject: Mathematics Topic: Measuring Mass in Kilograms Grade Level: 3rd Grade Duration: 45 minutes

Objectives: 1. Students will understand the concept of mass and its measurement in kilograms. 2. Students will be able to measure the mass of objects using kilograms. 3. Students will be able to convert between different units of mass, such as grams and kilograms.

Materials: - Whiteboard or chart paper - Markers - Measuring scales - Various objects of different masses - Worksheets (links provided below) - Video resources (links provided below)

Introduction (5 minutes): 1. Begin the lesson by asking students if they know what mass means. Write their responses on the board. 2. Explain that mass is the amount of matter in an object and it is measured in units called kilograms. 3. Show students a few objects of different masses and ask them to guess which one is heavier or lighter. 4. Introduce the concept of measuring mass using kilograms and explain that we use scales to measure it accurately.

Lesson Outline: 1. Understanding Kilograms (10 minutes): a. Show students a kilogram weight or a picture of it. Explain that a kilogram is a unit of mass. b. Discuss some common objects that weigh approximately one kilogram (e.g., a bag of sugar, a small watermelon). c. Show students how to read the scale on a measuring scale in kilograms.

1. Measuring Mass (15 minutes): a. Provide each student or group with a measuring scale and a set of objects with different masses. b. Instruct students to measure the mass of each object using kilograms and record their findings. c. Circulate the classroom to provide assistance and guidance as needed.

2. Converting Units (10 minutes): a. Explain that sometimes we need to convert between different units of mass, such as grams and kilograms. b. Show students how to convert grams to kilograms by dividing the number of grams by 1000. c. Provide examples and practice conversions together as a class.

Questioning and Assessment: 1. During the lesson, ask questions to check for understanding, such as: - What is mass? How is it measured? - How do you read the scale on a measuring scale in kilograms? - Can you convert 500 grams to kilograms? 2. Assess students’ understanding through observation during the measuring activity and by reviewing their completed worksheets.

Differentiation: 1. For students who need extra support, provide manipulatives or visuals to help them understand the concept of mass. 2. For advanced students, challenge them to convert between different units of mass, such as kilograms and metric tons.

Plenary (5 minutes): 1. Review the key points of the lesson, emphasizing the concept of mass and its measurement in kilograms. 2. Ask students to share one thing they learned about measuring mass in kilograms. 3. Summarize the importance of accurately measuring mass in everyday life.

Video Resources: 1. “Measuring Mass for Kids” - https://www.youtube.com/watch?v=3XqRJRuJm4Y 2. “Introduction to Kilograms” - https://www.youtube.com/watch?v=3XqRJRuJm4Y

Worksheet Resources: 1. “Measuring Mass in Kilograms” - https://www.mathworksheets4kids.com/measuring/mass/kilograms/1.pdf 2. “Converting Grams to Kilograms” - https://www.mathworksheets4kids.com/measuring/mass/grams-to-kilograms/1.pdf