In this math video lesson we will learn 3 easy steps to determine probability and describe likelihood. We will define probability and understand that it represents a number between 0 and 1 written as a ratio of the desired outcomes to the total outcomes. We will understand that probability can be represented as a fraction, decimal or percent. We will consider events such as rolling a number cube (die), spinning a spinner and selecting a marble from a jar of marbles. We will learn 3 simple steps to write the ratio. We will also learn how to describe probability as a likelihood on a scale. We will learn that 0 describes an impossible outcome and 1 represents an outcome that is certain. We will represent 25% or 1/4 as unlikely, 50% or 1/2 as equally likely, and 75% or 3/4 as likely. We will find probabilities of events and determine their likelihoods. Student practice is embedded in the lesson with exemplar solutions that are modeled and explained.
Purchase a set of scaffolded/guided notes for students to use while they watch this YouTube video or Edpuzzle OR while you instruct using the animated Googles slides below - https://www.teacherspayteachers.com/Product/Probability-Likelihood-Guided-Notes-Grade-7-Math-7SPC5-12967356
Purchase the Animated Google Slides used to create this video here - https://www.teacherspayteachers.com/Product/Probability-Lesson-11092014
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00:00 Introduction
00:15 Lesson Objectives
00:29 Essential Question
00:45 Definition of Probability
01:02 Formula for Probability
02:01 Three Steps to Determine Probability
02:32 How to Use the Three Steps to Find Probability
04:16 Student Practice #1 - Find Probability
05:57 What is Likelihood?
06:21 Probability & Likelihood 0 to 1 Chance
06:47 How to Describe Likelihood
07:54 Probability as a Decimal or Percent
08:40 What is the Likelihood?
10:11 Student Practice #2 - Describe Likelihood
12:29 Solution
Probability
Investigate chance processes and develop, use, and evaluate probability models.
7.SP.C.5 Understand that the probability of a chance event is a number between 0 and 1 that expresses the likelihood of the event occurring. Larger numbers indicate greater likelihood. A probability near 0 indicates an unlikely event, a probability around 1/2 indicates an event that is neither unlikely nor likely, and a probability near 1 indicates a likely event.