Lesson 3

Analyzing Data

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
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TIMS Challenge

DPP Challenge L can be used as a Problem of the Week.

  1. Possible response: First find the number of hours we are in school. Then use a stopwatch or second hand to collect data for the number of times you blink in 30 seconds. Take three trials and then find the median number of blinks in 30 seconds. Multiply this number by 2 to find the number of blinks in one minute. Multiply the number of blinks per minutes by 60 to estimate the number of blinks in an hour. Finally, multiply the estimated number of blinks in an hour by the number of hours in the school day.
  2. Possible response: I collected data for the number of blinks in 30 seconds.

I multiplied 6 blinks × 2 to find an average of 12 blinks per minute.

12 blinks per minute × 60 minutes = 72 blinks per hour.

Our school day is 6 hours long. 6 × 72 = 432 blinks in a 6-hour school day.

L. Estimation

  1. Work with a partner to design a strategy that you can use to estimate the number of times you blink during the school day.



  2. Show or tell how you used the strategy you designed in Question 1 to estimate the number of blinks in a school day for both you and your partner.