Math: Co-ordinates
- 1. Y MATH Co- ordinates M.2 041 042 044 X
- 2. vocabulary
- 3. coordinate either of two numbers or letters used to fix the position of a point on a map or graph.
- 4. grid a pattern of straight lines, usually crossing each other to form squares.
- 5. axis a fixed line against which the positions of points are measured, especially points on a graph.
- 7. horizontal going across and parallel to the ground rather than going up and down.
- 8. vertical Going straight up or down from a level surface or from top to bottom in a picture, etc.
- 9. structure
- 10. 1. Use a comma to separate 2 independent clauses joined by for and nor or yet but so* Example: A coordinate grid has two perpendicular lines, or axes, labeled like number lines.
- 11. 2. When a dependent clause, unnecessary word, or unnecessary phrase AND an independent clause are put together, there is usually a comma. 3. Use the comma to separate two sentences if it will help avoid confusion. Example: The x-coordinate always comes first, followed by the y-coordinate.
- 12. 4. Use either a comma or a semicolon before introductory words Example: Each point can be identified by an ordered pair of numbers; that is, a number on the x-axis called an x-coordinate, and a number on the y-axis called a y-coordinate.
- 13. Co- ordinate
- 14. Coordinate graphing sounds very dramatic but it is actually just a visual method for showing relationships between numbers.
- 15. The relationships are shown on a coordinate grid. A coordinate grid has two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis. The vertical axis is called the y-axis. The point where the x-axis and y-axis intersect is called the origin.
- 16. The numbers on a coordinate grid are used to locate points. Each point can be identified by an ordered pair of numbers; that is, a number on the x-axis called an x-coordinate, and a number on the y-axis called a y-coordinate. Ordered pairs are written in parentheses (x-coordinate, y-coordinate). The origin is located at (0,0). Note that there is no space after the comma.
- 17. The location of (2,5) is shown on the coordinate grid below. Thex-coordinate is 2. The y-coordinate is 5. To locate (2,5), move 2 units to the right on the x-axis and 5 units up on the y-axis.
- 18. The order in which you write x- and y-coordinates in an ordered pair is very important. The xcoordinate always comes first, followed by the ycoordinate. As you can see in the coordinate grid below, the ordered pairs (3,4) and (4,3) refer to two different points!
- 19. (2, 6) (1, 2) (4, 1) (5, 0)
- 20. Activity
- 21. Direction 1. Make a group of 5. 2. Supposed that you are the police officers who are finding where is the terrorist. 3. Read a clue that you get and find the start. 4. After you can find the start point, you have to read the clue and find more clues at this box. 5. Which team can find the terrorist first will be the winner.