Lesson Notes By Weeks and Term v5 - Grade 4

Lesson Video

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Performance objectives

• Identify solids, liquids, and gases.
• Describe different forms of energy.
• Explain how simple machines make work easier.
• Understand the importance of recycling.

Lesson summary

This week, we're going to revise and consolidate everything we've learned so far in Natural Sciences and Technology in Grade

4. Think of it as a check-up for your brain! We will focus on topics like matter and materials, energy, and simple machines. Understanding these concepts is crucial because they help us understand the world around us. From building a sandcastle on the beach to understanding how the lights in your house work, these scientific principles are at play everywhere in our daily lives in South Africa. Knowing about different materials, how energy works, and how machines make our lives easier helps us solve problems and become innovative thinkers.

Lesson notes

2. 1. Matter and Materials Everything around us is made of matter. Matter is anything that has mass and takes up space.

There are three common states of matter: Solids: Solids have a definite shape and a definite volume. Examples include a rock, a book, and a table. The particles in a solid are packed closely together and vibrate in fixed positions. Think of a brick in a house - it stays the same shape unless you break it.

Liquids: Liquids have a definite volume but no definite shape. They take the shape of their container. Examples include water, milk, and juice. The particles in a liquid are close together but can move around. Think of pouring juice into a glass; it takes the shape of the glass.

Gases: Gases have no definite shape and no definite volume. They fill the entire space available to them. Examples include air, oxygen, and steam. The particles in a gas are far apart and move around randomly. Think of air filling a balloon; it spreads out to fill the entire balloon.