Chapter 16.1 (Mathematics 5)

3D-Objects

Surfaces of objects in the environment

Group Activity 1

In groups of five:

  1. Collect different objects such as packets of milk, boxes, straws, small pipes, oranges, balls, small cubes, marbles, tins, among others.
  2. Study the surface of each object.
  3. Discuss the word or name used to describe the shape of each surface.
  4. Take some of the objects. Trace and name the shape you have drawn.
  5. Discuss and share your drawings with other groups.

Exercise A

  1. a textbook
  • squares
  • rectangles
  • circles
  1. a cube
  • squares
  • rectangles
  • circles
  • square
  • rectangle
  • triangle
  • circle
  • sqaure
  • rectangle
  • triangle
  • circle
  • sqaure
  • rectangle
  • triangle
  • circle