5 Minute Check Open your book to page 58 and complete, if not complete. You have five minutes. If complete, look through your homework to review for the quiz.

5 Minute Check

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5 Minute Check Quiz Directions – All answers should be on the right hand side of the paper. You will have 15 minutes to finish the test. When complete, bring it to my desk, go back to your desk and do something quiet. Do not forget units, if needed.

Friday, Aug 29 Lesson Equivalent Ratios

Objective: To determine if two ratios are equivalent.

Equivalent Ratios There are different ways to determine if two ratios are equivalent. One is to compare unit rates.

Equivalent Ratios Probably the easiest way is to simplify the ratios and compare. Equivalent ratios will simplify to the same ratio.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 9 miles in 12 hours; 4 miles in 8 hours. Step 1 – Set up the rates.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 9 miles in 12 hours; 4 miles in 8 hours. Step 1 – Set up the rates. 9 miles ? 4 miles 12 hours = 8 hours

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 9 miles in 12 hours; 4 miles in 8 hours. Step 2 – Simplify. 9 miles ? 4 miles 12 hours = 8 hours

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 9 miles in 12 hours; 4 miles in 8 hours. Step 2 – Simplify. 9 miles ? 4 miles 12 hours = 8 hours 3 miles ? 1 miles 4 hours = 2 hours

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 9 miles in 12 hours; 4 miles in 8 hours. Step 2 – Simplify. 9 miles ? 4 miles 12 hours = 8 hours 3 miles 1 miles Proof 4 hours ≠ 2 hours

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 15 out of 20 students; 60 out of 80 students. Do this on your own.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 15 out of 20 students; 60 out of 80 students. 15 ? = = 4

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 25 miles in 3 hours; 32 miles in 4 hours. Do this on your own.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 25 miles in 3 hours; 32 miles in 4 hours. 25 miles ? 32 miles 3 hours = 4 hours 25 miles 8 miles 3 hours ≠ 1 hour

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 5 goals out of 35 attempts; 8 goals out of 40 attempts. Do this on your own.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 5 goals out of 35 attempts; 8 goals out of 40 attempts. 5 goals ? 8 goals 35 attempts = 40 attempts 1 goal 1 goals 7 attempt ≠ 5 attempts

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 5 goals out of 35 attempts; 8 goals out of 40 attempts. 5 goals ? 8 goals 35 attempts = 40 attempts Another way to compare rates is to cross multiply and compare the products.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 5 goals out of 35 attempts; 8 goals out of 40 attempts. 5 goals ? 8 goals 35 attempts = 40 attempts 5 x 40 = x 35 = ≠ 280

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 7 correct out of 11 test questions; 6 correct out of 10 test questions. Do this on your own. Use any method.

Equivalent Ratios Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 7 correct out of 11 test questions; 6 correct out of 10 test questions. 7 correct ? 6 correct 11 questions = 10 questions 7 x 10 = 70 6 x 11 = ≠ 66

Equivalent Ratios Do this on your own.

Equivalent Ratios 6 DVD ? 3 DVD $90 = $45 1 DVD 1DVD $15 = $15

Equivalent Ratios Agenda Notes Homework – No Homework Homework Practice Due by the end of the period. Draw a box around your proof. Chapter 1 Test -Thursday, Sept 4 Accum Rev 1 due by Sept 4