Complete addition and subtraction sentences

What you'll learn

• Identify the coordinates of the midpoint of a line segment on the coordinate plane, given the coordinates of the endpoints, with 90% accuracy on a formative assessment.
• Solve for a missing endpoint coordinate of a line segment, given the midpoint and one endpoint, by applying the midpoint formula correctly in at least 3 out of 4 word problems.
• Explain, in writing, how the midpoint formula is derived from the concept of averaging the x-coordinates and y-coordinates of the endpoints, demonstrating understanding on a short answer question.
• Apply the midpoint formula to determine the center of a circle, given two points on the circle that represent the endpoints of a diameter, with 80% accuracy on a problem set.