Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
G 511. Find the midpoint of a line segment
G 510. Determine the slope of a line from points or a graph
G 512. Find the coordinates of a point rotated 180° around a given center point
G 605. Use the distance formula
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G 511. Find the midpoint of a line segment
G 510. Determine the slope of a line from points or a graph
G 512. Find the coordinates of a point rotated 180° around a given center point
G 605. Use the distance formula
What you'll learn
- Compute the midpoint of a segment given both endpoints, using M = ((x_1+x_2)/2, (y_1+y_2)/2), including when a coordinate is not an integer
- Recognize the midpoint as the point halfway across in x and halfway up in y, and so tell it apart from points produced by subtracting the coordinates or by averaging within one point
- Find the missing endpoint when one endpoint and the midpoint are given, by solving two one-variable equations
- Use the midpoint to locate the center of a circle from the endpoints of a diameter, and to decide whether a given point bisects a segment
- Distinguish a midpoint question from a distance question by whether it asks for the position halfway between two points or for the length between them, and state which operation each requires
Review first:
Slides
Step through the lesson, or watch it as a narrated video
Slides
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