Lesson plan

# 4. Locate and name points on a coordinate plane (C)

teaches Common Core State Standards CCSS.Math.Content.5.G.A.1 http://corestandards.org/Math/Content/5/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Lesson objective: Understand that we can locate and name points on a coordinate plane.

Students bring prior knowledge of representing whole numbers and fractions on a number line from 2.MD.B.6 and 3.NF.A.2. This prior knowledge is extended to representing numbers on a coordinate plane as students learn how to locate and plot points on a coordinate plane. A conceptual challenge students may encounter is thinking that reversing the order of plotting coordinates on a coordinate plane or grid does not matter.

The concept is developed through work with quadrant one of the coordinate plane, which allows them to practice locating and plotting various points when given and choosing coordinates.

This work helps students deepen their understanding of number and equivalence because they learn that numbers are used to represent locations on a coordinate plane and that a coordinate on a plane is equivalent to its values on the x and y axis.

Students engage in Mathematical Practice 6 (attend to precision) as they begin working with the coordinate plane. Students use the specific elements of a coordinate plane such as labeling the x- and y-axis, plotting points accurately, and ensuring the ordered pairs are in the proper order.

Key vocabulary:

• coordinate plane
• x-coordinate
• y-coordinate
• coordinates
• ordered pair
• origin
• x-axis
• y-axis

Special materials needed:

• grid paper
• the Playground Mapping Handout (in Additional Materials)
• blank coordinate grids (if possible)
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• 4. Locate and name points on a coordinate plane (C)