Introduction on Simple Machines
Simple machines are the building blocks of complex machines. They are devices that make our work easier by using a minimum amount of force. Simple machines have been around for thousands of years and have been essential to human progress. These machines are the fundamental principles behind most of the devices we use today. In this blog post, we will learn about the function of simple machines and their importance in our daily lives.
What are Simple Machines?
Simple machines are devices that make work easier by using a minimum amount of force. They are the building blocks of complex machines and are used to create many modern machines. There are six types of simple machines: lever, wheel and axle, pulley, wedge, screw, and inclined plane.
Think, Pair, Share
To start the lesson, display the image of all six simple machines and ask the students to make six columns in their notebooks: lever | wheel and axle | pulley | wedge | screw | inclined plane. Then, write in these columns two examples of these simple machines from daily life. After that, take responses from each pair of students and discuss the examples they have given.
Demonstration of a Lever
To demonstrate a lever, set up a lever on a demo table using materials like a ruler that will allow the load (ring magnets) to sit/balance without falling off. The goal of the demonstration is to have students predict if they would be able to lift the load with one finger. Students should not be able to lift it based on where the fulcrum is placed. Ask for volunteers to come up to the lever and lift the load using only one finger. The fulcrum should be as far away as possible from the load as the materials will allow. After some discussion, ask if anyone has an explanation as to why the load cannot be lifted. If the students have not yet suggested moving the fulcrum closer to the load, suggest a design change. Explain to the students that they have been using a simple machine called a lever and that there are others they will explore and see how they can make work seem easier.
The Function of Simple Machines
Display flashcards of all six machines on board and ask the students to explain the function of the lever. Ask them why they think machines are important for us. Explain to them that machines make our work easier, saving us time and energy. Can you imagine a world without a wheel and axle? What will happen if they are not discovered? Explain how the inclined planes are helpful, like ramps, which help us move heavy objects easily.
Conclusion on Simple Machines
Simple machines are all around us, from the wheel on our cars to the screws that hold our furniture together. They have been essential to human progress and continue to be an integral part of our daily lives. Teaching the function of simple machines can help students understand the basics of physics and mechanics. By understanding the principles behind simple machines, they can develop a greater appreciation for the technology around them.
