Activity Description Investigate the Cartesian coordinate system through identifying the coordinates of a randomly generated point, or requesting that a particular point be plotted. General Coordinates Game is one of the Interactivate assessment explorers.

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General Coordinates Game

Place in mathematics curriculum:

• introduce the Cartesian coordinate system
• practice students' point plotting skills
• practice students' graph reading skills

This activity allows the user to plot points on the coordinate plane and to read the coordinates of a point plotted by the computer. This activity would work well in groups of two or three for about fifteen to twenty minutes if you use the exploration questions and ten to fifteen minutes otherwise.

Preparations for this activity:

• Answer the question "Which is X and which is Y?"
• discuss positive and negative coordinate, quadrants, etc.