1 / 10

Quick Start Expectations

Quick Start Expectations. Come in and sit quietly. Fill in planner and HWRS : Work on Warm-up: Buildings , towers, and other structures contain many triangles in their design. What properties of triangles make them valuable in construction?. SD p. 76-86, # 1-5, 28. Notebook.

sage-morris
Download Presentation

Quick Start Expectations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Quick Start Expectations • Come in and sit quietly. • Fill in planner and HWRS: • Work on Warm-up: • Buildings, towers, and other structures contain many triangles in their design. What properties of triangles make them valuable in construction? SD p. 76-86, # 1-5, 28

  2. Notebook Problem 3.1: Building Triangles 9/26/14 What combinations of 3 side lengths can be used to make a triangle? How many different shapes are possible for such a combination of side lengths?

  3. Investigation 3: Designing Triangles and Quadrilaterals p. 62

  4. Group Task Part A (Labsheet 3.1: Building Triangles) Part B (Textbook Page 63 – Complete in Notebook) Learning Facilitator: Keep group on task and aware of time. Reporter/Recorder: Make sure everyone is writing down the group’s ideas for Parts A and B. Participation Captain: Encourage everyone to participate in the discussion. Resource Manager: Pick up lab sheets and polystrips for group. Note: Everyone should be prepared to share answers in the class discussion.

  5. Virtual polystrips: http://media.pearsoncmg.com/curriculum/math/cmp3/activities/A82391/

  6. Examples: 3,4,5 4,2,3 5,7,4 1,1,3 2,4,7 2,3,8

  7. less than or equal to greater than or equal to If side 1 + side 2 ≤side3,NOtriangle can be constructed. To form a triangle: side 1 + side 2 ≥ side 3. In NO case can a given set of side lengths be used to make 2 different triangle shapes! What did you find? Domake a triangle: (5, 12, 8), (16, 10, 7), (6, 3, 6) Do NOT make a triangle:(4, 9, 3),(12, 5, 19), (11, 5, 18)

  8. Can we come up with a summary statement that would help someone who is not here today know how to judge whether three lengths will make a triangle without actually building the triangle? For example: 4, 3, 5 8, 2, 12 8, 8, 4 Which sets form a triangle? Why? Do any of the triangles have special properties? Describe them. 4, 3, 5 and 8, 8, 4 because the sum of any two sides is greater than the third. 8, 8, 4 is isosceles since it has two equal sides. 4, 3, 5 is a right triangle because it has one 90 degree angle AND is a scalene triangle since all sides have different lengths.

  9. Exit Ticket: Jennifer says that you can make a triangle with any three side lengths. Do you agree or disagree? Explain your reasoning and provide an example to prove your thinking. Homework: Textbook: CMP3 Grade 7 Unit: Shapes and Designs p. 76-86, # 1-5, 28

More Related