Hello, young learners! Welcome back to Primary 4 Basic Science And Technology. In our previous lesson, we learned about Shapes and Construction. Today, we’re going to learn about Method Of Shape Construction.
Objectives
By the end of this lesson, you should be able to:
- Demonstrate how to fold and bend objects.
- List 3 methods of shape construction.
Methods Of Shape Construction
There are several methods of shape construction, and they are:
- Folding: Folding involves creating shapes by bending a flat material, such as paper, along specific lines or edges to form geometric shapes like squares, rectangles, triangles, or even more complex shapes like cylinders and cones.
- Bending: Bending entails reshaping materials like cardboard or metal into new forms by curving or flexing them. Objects like boxes, cylinders, or funnels can be made through bending.
- Casting: Casting involves making a mold and then pouring a liquid or molten material (like melted wax or metal) into the mold to create a specific shape. This method can be introduced in a simplified way for basic understanding.
- Cutting and Assembling: Cutting out shapes from materials like paper or cardboard and then assembling them together is another method. It allows to create complex shapes and objects by combining simpler components.
- Modeling: Modeling involves shaping pliable materials like clay or playdough by hand to create various forms and shapes.
Evaluation Questions
Now that you’ve learned about Method Of Shape Construction, let’s see if you can answer these questions:
- What are some methods of shape construction we discussed today?
- Can you give an example of an object you can create by folding?
- Can you give an example of an object you can create by bending?
- Can you explain how casting works in simple terms?
- What are some other methods of shape construction besides the ones we discussed?
Conclusion
We learned about different methods of shape construction, including folding, bending, casting, cutting and assembling, and modeling. These methods are used to create a wide variety of objects around us. Don’t forget to check the comments section if you have any questions, and use the navigation to move to the next lesson. See you in the next lesson!
