Lesson plan

# 9. Using absolute value to find the distance between points (A)

teaches Common Core State Standards 6.NS.C.8 http://corestandards.org/Math/Content/6/NS/C/8
teaches Common Core State Standards 6.G.A.3 http://corestandards.org/Math/Content/6/G/A/3
teaches Common Core State Standards MP7 http://corestandards.org/Math/Practice/MP7

# 9. Using absolute value to find the distance between points (A)

Lesson objective: Apply the ability to use absolute value to find the distance between points.

This lesson provides an opportunity for students to apply their knowledge and understanding of absolute value to a mathematical situation. Students are asked to find the perimeter of a rectangle using the coordinates of its vertices and must give the coordinates of a square enscribed within the rectangle.

Key Concept students will use:

• Use absolute value to find the distance between points.

Skills students will use:

• Students will find the distance between two points with a common coordinate that are positioned in different quadrants.
• Students will find the distance between two points with a common coordinate that are positioned in the same quadrant.
• Students will give the coordinates of points when given their distance apart.

Students engage in Mathematical Practice 7 (look for and make use of structure) as they apply their knowledge of coordinate pairs and absolute value to determine distances on the coordinate plane.

Key vocabulary:

• absolute value
• perimeter