In 5th grade, your child learned how to plot ordered pairs on a coordinate grid. Remind your child that a coordinate grid has an x-axis (horizontal line) that is intersected by a y-axis (vertical line). Ordered pairs are pairs of numbers that can be plotted on a grid. Ordered pairs are shown in parenthesis, separated by a comma ex. (3,4). The first number in the ordered pair tells you the direction to move across the x-axis, so in the ordered pair sample, you would move to the positive 3 on the x-axis. The second number in the ordered pair tells you how to move up or down the y-axis. Sixth graders will need to use the ordered pairs plotted to find trends and write and expression or equation to show a trend, when applicable.
Sample Problem – Finding a Trend for Ordered Pairs
(2,4), (3, 6), (4, 8)
The equation 2x=y can be used to show the trend, because y is always two times the amount of x. This equation could be used to find any new set of ordered pairs, when either x or y is known.