Mathematics

11.0 Preliminary activities

Study this grid carefully.

2) Study this grid carefully.

11.1 Characteristics of a grid

Activity 11.1

I have learnt that:

    A grid is formed by vertical and horizontal lines.

    Vertical lines are called posts and horizontal lines are called crossing bars.

11.2 Construction of a grid

Activity 11.2

11.3 Putting a point on a grid

Activity 11.3

Activity 11.4

    a) The point A is the intersecting point of the crossing bar number 2 and the post number 4 .

    b) The point B is the intersecting point of the post number 5 and the crossing bar number 3.

11.4 Location of a point on a grid

Activity 11.5

        – Count and number all posts from the first by using numbers: 1, 2, 3, 4, 5, 6.

       – Count and number all crossing bars from the first by using numbers: 1, 2, 3, 4, 5, 6.

Then;

• Show a point A at the intersection of post number 4 and crossing bar number 3.
• Show a point B at the intersection of post number 5 and crossing bar number 6.

The answer is on this grid.

I have learnt that:

When locating a point on a grid, we start by the number of posts and then the number of crossing bars.

Example:

The point A is located at the intersection of post number 4 and the crossing bar number 3.

Activity 11.6

1   . Draw a grid with 5 posts and 5 crossing bars. 

2.  Put a point on: 

     a) The post number 3 and the crossing bar number 4

     b) Post number 4 and the crossing bar number 5 c) Post number 2 and crossing bar number 3 

3.   Draw a grid with 7 posts and 7 crossing bars. 

4.   Draw a grid with 8 posts and 8 crossing bars. 

     Show the point A located at the post number 5 and the crossing bar number 4.           

       Put the point B at the post number 7 and the crossing bar number 6.

END UNIT ASSESSMENT 11

1.    a. Construct a grid with 10 posts and 10 crossing bars.

       b. Put the points on the grid at:

              (a) Post number 3 and the crossing bar number 7.

             (b) Post number 10 and the crossing bar number 8

             (c) The crossing bar number 5 and the post number 9.

            (d) Crossing bar number 7 and the post number 8

            (e) Crossing bar number 4 and the post number 6

            (f) Crossing bar number 6 and the post number 10.

2. Locate the position of each point in the given grids