Subject: Mathematics

Theme/Content/Topic/Lesson: 3D Shapes (Cube and Cuboid)

Class/Grade: 3rd Grade

Name of the Teacher: D. R. Simkhada

No. of Students: 20

No. of Periods: 1

Learning Outcomes: After completion of this lesson the students will be able to:

• Identify a cube and a cuboid.
• Find the edges, vertex and faces of cuboid-shaped objects.
• Create a model of a cube and cuboid using the nets of the model.

Teaching-Learning Resources:

Geometric solids (cube- and cuboid-shaped objects made of plastic or foam)

• Scissors and Glue
• Large and thick pieces of paper and graph paper or squared grid.
• Drawing tools (pencils, markers, etc.)

Theory/Philosophy:

The constructivist vision of education emphasizes the importance of actively constructing one’s understanding of the world through hands-on, experiential learning(Yoders, 2014). In this lesson, students will have the opportunity to engage with real cube and cuboid-shaped objects and explore their properties through hands-on activities. This will allow students to construct their own understanding of what a cube and cuboids are and how it differ from each other.

Learning Activities:

Activity 1: Identifying the models of cube- and cuboid-shaped objects. (5 minutes)

As a teacher, I will gather various cube-shaped and cuboid-shaped objects from the surroundings and use them to demonstrate their properties to the students.

Activity 2: Identifying the pictures of cube- and cuboid-shaped objects. ( 10 minutes)

As a teacher,

• I will begin by introducing the concept of cubes and cuboids, explaining to the students that today’s lesson will focus on these shapes.

• I will organize the students into groups of five and encourage them to discuss examples of cube and cuboid models they observe in their surroundings.

Image Source: (Simkhada, 2022)

Activity 3: Identifying the edges, vertex and faces of cuboid-shaped objects. (10 minutes)

As a teacher,

• I will show students a variety of cubical and cuboid-shaped objects, such as a gift box, dice etc., and ask them to identify and point out the edges, vertices, and faces.

Image Source: (Simkhada, 2022)

Activity 4: Create a model of a cube and cuboid using the nets of the model. (10 minutes)

Image Source: (Simkhada, 2022)

• I will guide students to assemble nets into cubes and cuboids using glue.
• After completing their models, I will lead a discussion on their properties, such as vertices, edges, and faces.
• To conclude, I will ask students to reflect in writing on their learning and hands-on experience.

Assessment:
Class Assignment: Reflective writing: 10 minutes

• Students will write a reflective summary at the end of the class.
• They will describe what they learned about cubical and cuboid-shaped objects.
• They will compare cubical and cuboid shapes with other 3D shapes to deepen their understanding.

Home Assignment:

1. Collect 2/2 cube- and cuboid-shaped solid objects from the surroundings and present in the class.
2. Identify the cube- or cuboid-shaped object from the following set of objects.

Image Source: (Simkhada, 2022)

3. Show one of the faces, one of the vertices, and one of the edges of the cube or cuboid-shaped object from the following set of objects.
   
   Image Source: (Simkhada, 2022)

4. Make a 1/1 model of a cube and cuboid from the material provided. (The teacher will provide nets of cubes and cuboids, thick papers, or straws.)

References

Simkhada, D. R. (2022). Maths Links for grade 2, Kathmandu, Readmore Publishers and Distributors

Simkhada, D. R. (2022). Maths Links for grade 3, Kathmandu, Readmore Publishers and Distributors

Yoders, S. (2014). Constructivism Theory and Use from 21 st Century Perspective. Journal of Applied Learning Technology, 4(3).