Chapter 15.1 (Mathematics 5)

Identifying and drawing horizontal and vertical lines

Horizontal lines

Group Activity 1

In groups of four:

  1. Run your hands along horizontal edges of a table.
  2. Run your hands along horizontal edges of a desk.
  3. Run your hands along horizontal edges of a chalkboard.
  4. Run your hands along horizontal edges of windows and doors.
  5. Discuss and share with other groups.

Note

Horizontal line is a straight line which runs from left to right across the page.

Horizontal lines in the classroom and in the environment

Which lines are horizontal?

Drawing horizontal lines

Group Activity 2

In pairs:

  1. Place your ruler on a paper and draw a line from left to right.
  2. Use other objects with straight edges and draw other lines to run from left to right.
  3. Discuss and share with other groups.

Exercise A

  • AB
  • AF
  • BC
  • CD
  • DE
  • EF
  • AB
  • AG
  • BC
  • BH
  • CD
  • DE
  • EF
  • FG
  • FH
  • GH
  • HD

A3

In pairs, draw horizontal lines using:

  1. A ruler.
  2. An edge of a book.
  3. Edge of a box.

A4

Identify horizontal lines at home.

Identifying and drawing vertical lines

Group Activity 3

In groups of four:

  1. Run your hands along the legs of a table.
  2. Run your hands along corners of your two walls.
  3. Discuss your results and share with other groups.

Note

A vertical line runs straight up and down.

Vertical lines in the classroom and in the environment

Drawing vertical lines

Group Activity 4

In pairs:

  1. Place a ruler on a piece of paper and draw a line running from top to bottom.
  2. Use other objects with straight edges to draw other lines to run from top to bottom.
  3. Discuss and share with other groups.

Exercise B

  • AB
  • AF
  • BC
  • BG
  • CD
  • DE
  • DG
  • EF
  • FG
  • AB
  • AG
  • BC
  • BH
  • CD
  • CH
  • DE
  • EF
  • EH
  • FG
  • GH

B3

In pairs, draw vertical lines using:

  1. A duster.
  2. A ruler.
  3. An edge of a book.

B4

Identify vertical lines at home.