Partitions/Midpoint Formula

50 Minute Class, Curriculum, Geometry

Learning Goal: Build conceptual and procedural fluency with partitioning segments and calculating midpoints.


1:1 Lesson

  • Pear Deck
  • Do Ungraded Formative Assessment on paper



  • Common Core
    • HSG.GPE.B.6 – Find the point on a directed line segment between two given points that partitions the segment in a given ratio.
  • TEKS
    • G.2(A) – determine the coordinates of a point that is a given fractional distance less than one from one end of a line segment to the other in one- and two-dimensional coordinate systems, including finding the midpoint
    • G.2(B) – derive and use the distance, slope, and midpoint formulas to verify geometric relationships, including congruence of segments and parallelism or perpendicularity of pairs of lines

2 thoughts on “Partitions/Midpoint Formula

  1. I just wanted to say thank you for all the content you’ve posted here. I have been using your materials to guide my geometry classroom this year and I love it. I have learned a lot from you and my students are thinking more this year than any year I have taught geometry prior! I appreciate your work.

    1. Wow thank you for the kind words, Alyssa! I really appreciate it! I’m very happy to hear that the site has been useful and your students are doing well. That’s great news!

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