The mathematical purpose of this lesson is to make connections to prior knowledge about probability and to use probability to interpret data. The work of this lesson connects to previous work because students learned about chance events and probability in previous grades. The work of this lesson connects to upcoming work because students will describe and use the sample space for chance experiments to calculate the probability of compound events. In the take turns activity, students trade roles explaining their thinking and listening, providing opportunities to explain their reasoning and critique the reasoning of others (MP3).
Lesson overview
 2.1 Warmup: Taking Names (15 minutes)
 2.2 Activity: Who Was Helpful? (10 minutes)

2.3 Activity: Probability Words (10 minutes)
 Includes "Are you Ready for More?" extension problem
 Lesson Synthesis
 2.4 Cooldown: Reckless Fishing (5 minutes)
Learning goals:
 Describe (in writing) the sample space for chance experiments. Use the sample space to calculate the probability of compound events.
 Generate (in writing) and critique (orally) probability models that meet specific criterion.
Learning goals (student facing):
 Let’s explore probability
Learning targets (student facing):
 I can find the sample space for chance experiments.
 I can model situations using probability.
 I can use sample space to calculate probability.
Required materials:
 Paper bags
 Preprinted slips, cut from copies of the blackline master
 Data collected from the warmup
Required preparation:
 Prepare paper bags with cutup slips for the warmup.
 The paper bags should contain slips of paper with the names from the blackline master.
 Bag 1: Clare x3, Mai x5, Jada x7
 Bag 2: Andre x1, Diego x6, Elena x8
 Bag 3: Noah x10, Elena x3, Priya x2
 Bag 4: Clare x10, Mai x3, Jada x2
 Bag 5: Andre x9, Diego x4, Elena x2
 One paper bag containing cutup slips of the letters in PIZZAPIZZA for the Teacher Lesson Synthesis.
Standards:
 This lesson builds on the standard:CCSS.7.SP.C.6MS.7.SP.6MO.7.DSP.C.6aMO.7.DSP.C.6bMO.7.DSP.C.6c
 This lesson builds towards the standard:CCSS.HSSCP.A.1MS.SCP.1MO.G.CP.A.1
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