Simulating Multi-step Experiments

5 min

Teacher Prep
Setup
Students in groups of 2. Give students 1 minute of quiet think time, followed by partner- and whole-class discussions.

Narrative

In this Warm-up, students consider a situation and propose questions related to the situation. While students may ask many different kinds of questions, the important discussion points are about understanding the context and the relationship to simulation and probability.

Launch

Tell students to close their books or devices (or to keep them closed). Arrange students in groups of 2. Introduce the context of businesses built around skiing. Use Co-Craft Questions to orient students to the context and elicit possible mathematical questions.

Give students 1–2 minutes to write a list of mathematical questions that could be asked about the situation before comparing questions with a partner.

Student Task

Alpine Zoom is a ski business. To make money over spring break, they need it to snow at least 4 out of the 10 days.

<p>A picture of people waiting to buy tickets to ski or snowboard.</p>

<p>A picture of people skiing on a hill. </p>

Sample Response

Sample responses:

  • What is the probability it will snow each day?
  • What is the probability the business will make money this spring break?
  • Can we design a simulation to predict the weather for 10 days?
Activity Synthesis (Teacher Notes)

Invite several partners to share one question with the class and record responses. Ask the class to make comparisons among the shared questions and their own. Ask, “What do these questions have in common? How are they different?” Listen for and amplify language related to the learning goal, such as “probability” and “simulation.”

If it does not come up, ask how students might find the probability of snow in the next few days (look at a weather forecast).

Standards
Building Toward
  • 7.SP.8.c·Design and use a simulation to generate frequencies for compound events. <em>For example, use random digits as a simulation tool to approximate the answer to the question: If 40% of donors have type A blood, what is the probability that it will take at least 4 donors to find one with type A blood?</em>
  • 7.SP.C.8.c·Design and use a simulation to generate frequencies for compound events. <span>For example, use random digits as a simulation tool to approximate the answer to the question: If 40% of donors have type A blood, what is the probability that it will take at least 4 donors to find one with type A blood?</span>

15 min

10 min