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9/14 Geometry Bell Ringer

9/14 Geometry Bell Ringer. Step 1: Grab materials for the day from the front of the room Step 2: Answer the following questions on your bell ringer sheet. Really THINK! Q1: What month is Mr. Chrischilles’ birthday in?

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9/14 Geometry Bell Ringer

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  1. 9/14 Geometry Bell Ringer Step 1: Grab materials for the day from the front of the room Step 2: Answer the following questions on your bell ringer sheet. Really THINK! Q1: What month is Mr. Chrischilles’ birthday in? Q2: If Mr. Chrischilles teaches 5 classes, how many total students does he teach? Homework: Finish Frayer Model

  2. 9/15 Bell Ringer Review • Q1: August…How do you know? • YOU GUESSED! • Q2: 150. How do you know? • Observe 30 students in this class, assume all other classes are filled with 30, then 30 x 5 = 150. • This second question allows you to make a conjecture based on something called inductive reasoning

  3. 9/15 Agenda • I CAN define inductive reasoning and conjecture, and tell the difference between a conjecture and a guess. • 1. Bell Ringer • 2. New Material – Vocabulary Sheet • 3. Guided Practice – Frayer Models • 4. Independent Practice – Examples and Non-examples of conjectures • 5. Exit Ticket

  4. Intro to New Material Example 1: I observe that my class is interrupted by an announcement from the office at least once per day Conjecture: One of my classes will be interrupted today. How/Why You Know: Because it’s happened once per day for the last week. Guess: All of my classes will be interrupted today  Where’s your evidence?!

  5. Intro to New Material Example 2: Last July 11th (7/11), the 7Eleven gave out free Slurpees. Conjecture: One July 11th, 2011, the 7Eleven will be giving out free Slurpees. Guess: 7Eleven will give out free Slurpees tomorrow.

  6. Vocabulary Sheet The process of making conjectures. Observe a pattern and make conclusions based on observations. A statement believed to be true based on our observations.

  7. Definition Characteristics CONJECTURE Examples Non-examples

  8. Process • Step 1: You have 3 minutes to write down definition and characteristics of a conjecture on your own. • Step 2: You have 3 minutes to come up with 1 example and 1 non-example (a guess) of a conjecture. • Step 3: Share your examples and non-examples with your elbow partner, writing theirs down on your paper. How can you check to make sure it works?!

  9. On Your Own • Now come up with 3 more examples and 3 more non-examples. Think about math patterns! • If you need help, raise your hand, I will be around to check with you. • If you have a really good example, raise your hand. • THIS WILL BE CHECKED AT THE BEGINNING OF CLASS TOMORROW.

  10. Challenge Question • Use your inductive reasoning to help you answer this question: How many gas stations are there along Pulaski Rd from N 50th down to S 115th? • EXPLAIN how you figured this out. Write it at the bottom of your notes from today.

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