Lesson on Drying Moulded Objects – Drying With Fire for Primary 2

Hello, young learners! Welcome back to Primary 2 Basic Science And Technology. In our previous lesson, we learned about Drying Moulded Objects – Drying With Sun. Today, we’re going to learn about Drying Moulded Objects.

Objectives

By the end of this lesson, you should be able to:

• Explain the concept of drying moulded objects with fire.

Drying Moulded Objects With Fire

What is Drying? Drying is a process that removes water or moisture from things. When we mold or shape objects using materials like clay or dough, they are often wet or soft. Drying helps make them firm and strong.

Explanation

1. Introduction to Drying: Drying is a way to remove water or moisture from things. When we mold or shape objects using materials like clay or certain types of dough, they are often wet or soft. Drying helps make them firm and strong.
2. Using Fire for Drying: Fire is a source of heat that can speed up the drying process. In certain activities, like crafting or molding objects, we can carefully use fire to make the objects dry faster. This doesn’t mean setting things on fire, but using heat from a safe source.
3. Safety Guidelines: We always follow safety guidelines when using fire. This includes keeping a safe distance, not playing with fire, and letting the teacher handle the heating part. Safety is the most important thing when we are working with heat.
4. Why We Dry Objects: We dry objects to make them strong and long-lasting. Imagine if we made a clay figure or a craft, and it stayed wet and soft forever – it wouldn’t last. Drying with fire helps our creations become hard and stay in the shape we want them to be.

Drying molded objects with fire is a creative and hands-on way to understand the basic principles of shaping materials and making them useful and durable. Always remember, safety comes first when working with fire.

Evaluation

Now that you’ve learned about drying moulded objects with fire, let’s see if you can answer these questions:

1. Why is it important to follow safety guidelines when using fire?
2. Explain the steps you would take to heat a moulded object with fire.
3. When should you have a teacher supervise when using fire?
4. What are some other ways to dry moulded objects besides using fire?
5. What are some examples of objects that are often dried with fire?

Conclusion

We learned that drying moulded objects with fire is a useful technique, but it’s important to always prioritize safety. Remember to follow the safety guidelines and ask your teacher for help if needed. Keep exploring and learning about different ways to work with materials! See you in the next lesson!