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3 x+ 5 = 41
3 ( 11 )+ 5 = 38
386 = 41- Since the band teacher congratulated Marcy on selling more than forty bars, we can have our equation equal
41. - John sold less than 12 bars, so we can use 11 as a possible answer forx.
- This shows that our statement that Marcy did not sell more than forty bars is a true statement.
- Then have students write their own statement and proof of statement for a geometric proof.
- You could provide them with a diagram or have them draw in their own.
III.MeetingObjectives
- Students will reason indirectly to write proofs of statements.
- Students will work with both algebraic and geometric examples.
IV.NotesonAssessment
- Look at student examples.
- Is the work accurate?
- Does the reasoning make sense?
- Are the students applying the correct theorems to prove their statements?
- Offer feedback and correction when necessary.
Chapter 5. Geometry TE - Problem Solving