The purpose of this lesson is to enable students to locate points that lie in a plane formed by two intersecting axes. The students will understand that the x-axis is horizontal and the y-axis is vertical on the coordinate plane. Also, the students will be able to identify the location of a point shown by two numbers called an ordered pair. Understanding the coordinate plane is important for real world concepts of geometry and algebra for graphing and solving equations.
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Lesson Objectives
At the end of this lesson, students will be able to:
understand the concept of the x-axis and y-axis.
determine the location of a point using an ordered pair.
locate points in the coordinate plane.
Student Target
“I can...
locate the point on the coordinate grid using the x-axis and y-axis correctly."
determine the ordered pair of a point located on the coordinate grid."
draw a point on the coordinate plane when given an ordered pair."
CCR Focus Standards
Geometry - Level C
Use a pair of perpendicular number lines, called axes, to define a coordinate system, with the intersection of the lines (the origin) arranged to coincide with the 0 on each line and a given point in the plane located by using an ordered pair of numbers, called its coordinates. Understand that the first number indicates how far to travel from the origin in the direction of one axis, and the second number indicates how far to travel in the direction of the second axis, with the convention that the names of the two axes and the coordinates correspond (e.g., x-axis and x-coordinate, y-axis and y-coordinate).
Represent real world and mathematical problems by graphing points in the first quadrant of the coordinate plane, and interpret coordinate values of points in the context of the situation.
Supporting Standards
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
Standards for Mathematical Practice
Use appropriate tools strategically. (MP.5)
Attend to precision. (MP.6)
Look for and make use of structure. (MP.7)
KYAE Employability Standards
E.6 Identify and effectively use skills and materials needed for a particular task.
E.7 Accurately analyze information and respond appropriately.
