Lesson Notes By Weeks and Term v5 - Grade R
Space and shape: basic 2D shapes (circle, square, triangle) – Week 10 focus
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Space and shape: basic 2D shapes (circle, square, triangle) – Week 10 focus
Download the Lessonotes Mobile South Africa app for faster lesson access on Android and iPhone.
Subject: Mathematics
Class: Grade R
Term: 2nd Term
Week: 10
Theme: General lesson support
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This week, we will be exploring the fascinating world of shapes! Shapes are all around us, from the wheels on a taxi to the roof of your house and even the delicious cookies you eat. Understanding shapes helps us to describe and understand the world we live in. In Grade R, it’s important for children to be able to identify and name basic shapes because it builds the foundation for more complex geometry in later grades. Being able to recognise shapes helps children with problem-solving, spatial reasoning, and even early literacy skills. Think about how letters are made up of shapes! By learning about shapes, we can become better observers and thinkers.
Let's dive into the world of shapes! We will focus on three important 2D (two-dimensional) shapes: the circle, the square, and the triangle. Remember, 2D shapes are flat!
Circle: Definition: A circle is a round shape with no corners and no straight sides. It is like a ball that has been squashed flat.
Attributes: It has a smooth, curved edge that goes around and around. It has no sides and no corners.
Examples: Think of the sun, a wheel of a car, a plate, a coin (like a R5 coin), a lollipop, or a soccer ball (if you look at it head-on in a 2D drawing).
Why it's important: Circles are strong shapes. Wheels work because they are circles!
Square: Definition: A square is a shape with four sides that are all the same length. It also has four corners, and each corner is a right angle (a perfectly square corner).
Attributes: Four equal sides, four corners.
Examples: Think of a window, a tile on the floor, a cracker (like a Salticrax), some picture frames, a checkerboard.
Why it's important: Squares are used in building and design because they are stable.
Triangle: Definition: A triangle is a shape with three sides and three corners.
Attributes: Three sides, three corners. The sides can be different lengths, or they can all be the same.
Examples: Think of a slice of watermelon, a road sign ("Yield" sign), a roof of a house (the triangular part), a party hat, a musical triangle instrument.
Why it's important: Triangles are strong shapes used in construction to support things.
Example 1: Identifying a circle
Imagine you are at a spaza shop buying sweets. You see a lollipop. What shape is the lollipop? The lollipop is round with no corners. It is a circle.
Example 2: Identifying a square
You are playing a game with building blocks. You pick up a block. It has four sides, and all the sides look the same length. What shape is it likely to be? It's probably a square.
Example 3: Identifying a triangle
While driving with your family, you see a bright yellow sign on the side of the road warning drivers to be careful of children crossing. The sign has three sides. What shape is the sign? It is a triangle.
Example 4: Sorting Shapes