Lesson Notes By Weeks and Term v5 - Grade 2

Lesson Video

This page supports the lesson note with a companion video and a short classroom-ready summary.

For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.

Performance objectives

• Welcome, Grade 2 learners! This week, we're diving deeper into the exciting world of shapes and objects all around us. Understanding shapes isn't just about maths; it helps us understand the world. From the rectangular shape of a classroom door to the round shape of a soccer ball, shapes are everywhere! In South Africa, we see shapes in our traditional beadwork (often using geometric patterns), the cylindrical shape of a Zulu hut, and the rectangular shape of our houses. Learning about 2D shapes and 3D objects helps us to describe the world, build things, and even create art.
• By the end of this week, you will be able to:
• Objective 1: Identify and name the following 2D shapes: pentagon, hexagon, octagon, and oval. (CAPS: Geometry - Properties of 2-D shapes).
• Objective 2: Describe the properties of 2D shapes (number of sides, straight or curved sides). (CAPS: Geometry - Properties of 2-D shapes).
• Objective 3: Identify and name the following 3D objects: cube, rectangular prism (cuboid), sphere, cylinder, cone, and triangular prism. (CAPS: Geometry - Properties of 3-D objects).

Lesson summary

Welcome, Grade 2 learners! This week, we're diving deeper into the exciting world of shapes and objects all around us. Understanding shapes isn't just about maths; it helps us understand the world. From the rectangular shape of a classroom door to the round shape of a soccer ball, shapes are everywhere! In South Africa, we see shapes in our traditional beadwork (often using geometric patterns), the cylindrical shape of a Zulu hut, and the rectangular shape of our houses. Learning about 2D shapes and 3D objects helps us to describe the world, build things, and even create art.

Lesson notes

Let's explore some new 2D shapes and then jump into the world of 3D objects! 2D Shapes: Expanding Our Knowledge We've already learned about squares, circles, triangles, and rectangles. Now, let's add to our shape vocabulary! Remember, 2D shapes are flat.

Pentagon: A pentagon has five sides. All five sides are straight. Think of the home plate in a baseball or cricket field – it's shaped like a pentagon! Draw a pentagon and count its sides.

Hexagon: A hexagon has six sides. All six sides are straight. Think of a honeycomb in a bee's nest – each cell is often hexagonal. Draw a hexagon and count its sides.

Octagon: An octagon has eight sides. All eight sides are straight. A stop sign is a perfect example of an octagon! Draw an octagon and count its sides.

Oval: An oval is a shape that looks like a stretched-out circle. It has no straight sides – it is completely curved. An egg is a good example of an oval. Draw an oval. 3D Objects: Bringing Shapes to Life 3D objects are solid and take up space. They have length, width, and height.

Cube: A cube has six square faces. All the faces are the same size. Think of a dice used in games. A cube has edges (where the faces meet) and corners (also called vertices). Count the faces, edges, and corners of a cube (6 faces, 12 edges, 8 corners).

Rectangular Prism (Cuboid): A rectangular prism (or cuboid) has six rectangular faces. Think of a brick or a lunchbox. Just like a cube, it has edges and corners. Some faces may be square. Count the faces, edges, and corners of a rectangular prism (6 faces, 12 edges, 8 corners).

Sphere: A sphere is a round object, like a ball. It has a curved surface and no flat faces, edges, or corners. Think of a soccer ball or a marble.

Cylinder: A cylinder has two circular faces and one curved surface connecting them. Think of a can of cool drink or a roll of toilet paper. It has no corners.

Cone: A cone has one circular face and a curved surface that comes to a point (vertex). Think of an ice cream cone or a party hat.

Triangular Prism: A triangular prism has two triangular faces and three rectangular faces. Think of a Toblerone chocolate box.

Worked example

Question: Sipho sees a road sign that has 8 sides. What shape is the road sign?

Solution: A shape with 8 sides is an octagon. The road sign is an octagon.

Explanation: We remember that 'octa-' refers to eight, so an octagon has eight sides.

Question: Thandi has a box of building blocks. One of the blocks has six square faces. What 3D object is the block?

Solution: A 3D object with six square faces is a cube.

Explanation: We know a cube is special because all its faces are squares.

Question: Fatima is holding a fruit that is round and has no flat surfaces. What 3D object is the fruit most like?

Solution: The fruit is most like a sphere.

Explanation: A sphere is perfectly round with no flat surfaces.

Guided Practice (With Solutions)

Question 1: Draw a shape with 5 straight sides. Name the shape.

Solution: Draw a pentagon. The shape is a pentagon.

Explanation: We know that a pentagon has 5 straight sides.

Question 2: What 3D object does a soccer ball resemble? Describe its properties.