Hello, young learners! Welcome back to Primary 1 Basic Science & Technology. In our previous lesson, we learned about Storage and Care of Simple Machines. Today, we’re going to learn about Simple Machines in the school.
Objectives
By the end of this lesson, you should be able to:
- Identify simple machines in the school.
Simple Machines in the School
What are Simple Machines? Simple machines are tools that make work easier. They help us to move things, lift heavy objects, and change the direction of force. There are six main types of simple machines:
- Lever: A lever is a rigid bar that pivots on a fixed point called a fulcrum. It helps us to lift heavy objects or move them with less effort. Some examples of levers in the school include see-saws, pry bars, and bottle openers.
- Pulley: A pulley is a wheel with a groove that helps to change the direction of force. It is often used to lift heavy objects, such as flags or blinds.
- Wheel and Axle: A wheel and axle is a simple machine that consists of a wheel attached to a rod called an axle. It helps us to move things easily, such as office chairs, electric fans, and steering wheels in cars.
- Inclined Plane: An inclined plane is a flat surface that is tilted at an angle. It helps us to move objects up or down with less effort. Some examples of inclined planes in the school include slides and ladders.
- Wedge: A wedge is a simple machine that is shaped like a triangle. It is used to split things apart or to hold things together. Some examples of wedges in the school include scissors, knives, and nails.
- Screw: A screw is a simple machine that is a spiral-shaped rod. It is used to hold things together or to move things in a circular motion. Some examples of screws in the school include screws used to hold furniture together and screws used in pencil sharpeners.
Examples of Simple Machines in the School
Some of the simple machines you might find in the school include:
- Pulley: Blinds, flag poles.
- Lever: See-saw, pry bar, toilet handle, crowbars, wheelbarrows, bottle openers, stapler, toilet handle, and nail clippers.
- Wedge: Scissors, screw, a knife, nail, needle, staple pins.
- Wheel and Axle: Office chairs, electric fan, merry-go-round, steering wheels in cars, and tap/faucet knobs.
- Inclined Plane: Slide, Ladder.
Evaluation Questions
Now that you’ve learned about simple machines, let’s see if you can answer these questions:
- What is a simple machine?
- Give two examples of simple machines in the school.
- What are the six main types of simple machines?
- Can you describe how a lever works? 5. Can you name a simple machine that helps us to move things easily?
Conclusion
Simple machines are all around us, even in our school! They make our lives easier by helping us to move things, lift heavy objects, and change the direction of force. Remember to look around your school and see if you can identify any simple machines. Keep exploring and learning about the world around you! See you in the next lesson!
