The Lever Heroes: Lebo and Sipho’s Big Discovery

SECTION B: NARRATIVE ARTEFACT ON LEVERS (20 MARKS) Title: “The Lever Heroes: Lebo and Sipho’s Big Discovery” Page 1: Introduction (Story Begins) Lebo and Sipho were walking home from school when they found a huge rock blocking the pathway. “Oh no! How are we going to move this?” Sipho asked. Lebo smiled. “Remember what we learned in class today? We can use a lever!” “A lever?” Sipho asked, confused. “Yes,” said Lebo. “A lever is a simple machine that helps us lift or move heavy objects more easily using a bar and a pivot point.” Page 2: What is a Lever? (Concept Explanation) Lebo drew a diagram in the sand and explained: “A lever has three important parts: The Fulcrum – the point where the lever pivots The Load – the object being moved The Effort – the force you apply Levers help us by giving us something called mechanical advantage, which means we can use less effort to move a heavy load.” Page 3: First-Class Lever (Story + Example) Lebo placed a stick over a small rock. “Look, Sipho! The rock underneath is the fulcrum, the big rock is the load, and when I push down, that’s the effort.” Sipho watched as the rock lifted. “That’s amazing!” “This is called a first-class lever,” Lebo explained. “The fulcrum is in the middle.” Example in real life: Seesaw, crowbar Page 4: First-Class Lever Diagram (You must draw this in Canva) 👉 Draw and label clearly: A straight bar Fulcrum in the middle Effort on one side Load on the other side Labels: Fulcrum (middle), Effort (one side), Load (other side) Page 5: Second-Class Lever (Story + Example) Later, Sipho helped his mother carry vegetables using a wheelbarrow. “Hey Lebo!” Sipho shouted. “Is this also a lever?” “Yes!” Lebo replied. “This is a second-class lever. The load is in the middle.” “So that’s why it feels easier to carry heavy things!” Example in real life: Wheelbarrow, bottle opener Page 6: Second-Class Lever Diagram 👉 Draw and label: Fulcrum at one end Load in the middle Effort at the other end Labels: Fulcrum → Load → Effort Page 7: Third-Class Lever (Story + Example) At the park, Lebo picked up litter using tongs. Sipho asked, “Is that also a lever?” “Yes,” Lebo said. “This is a third-class lever. The effort is in the middle.” “But it feels harder!” “That’s because this type gives more control and movement, not force.” Example in real life: Tweezers, fishing rod, human arm Page 8: Third-Class Lever Diagram 👉 Draw and label: Fulcrum at one end Effort in the middle Load at the other end Labels: Fulcrum → Effort → Load Page 9: Mechanical Advantage Explanation Lebo explained: “Mechanical advantage means a machine makes work easier. First-class levers can change direction Second-class levers make lifting easier Third-class levers help with speed and control That’s why different levers are used for different jobs!” Page 10: Conclusion (Story Ending) Sipho smiled. “Wow, levers are everywhere!” “Yes,” Lebo said proudly. “We use them every day without even noticing.” From that day on, Sipho and Lebo became known as the Lever Heroes, always using science to solve problems!