Students learn to determine the median of a set of data in this 3 part problem-solving lesson. They practice finding the median with an odd and even amount of numbers in different problem-solving scenarios.

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Ontario Math Curriculum Expectations:

D1.5

determine the range as a measure of spread and the measures of central tendency for various data sets, and use this information to compare two or more data sets

D1.5

determine the mean and the median and identify the mode(s), if any, for various data sets involving whole numbers and decimal numbers, and explain what each of these measures indicates about the data

D1.5

determine the impact of adding or removing data from a data set on a measure of central tendency, and describe how these changes alter the shape and distribution of the data

WHAT'S INCLUDED

• Tips Sheet: This detailed guide will provide you with a breakdown of each part of the lesson. This includes how much time is allocated, what the students and teacher role is, and a list of guiding questions that the teacher could ask students in order to clarify their thinking.

• Problem Solving Checklist: An optional problem-solving checklist has been included for your students to use to self-assess their work.

• Getting Started: Your students will be guided on how to determine the median of an odd and even amount of numbers.

• Working On It: This is a rich problem-solving task in which your students can work together to solve.

• Reflect and Connect: This is a list of things the teacher needs to highlight while students present and share their solutions to the Working On It task. It includes a list of guiding questions to ask while students present. It also includes a list of problem-solving and number talk strategies that could be identified in the presenting group's work. This sheet also demonstrates how to effectively display student work in the classroom so that strategies can easily be referenced during other problem-solving opportunities.

• Exit Ticket: A problem-solving task in which students complete independently by applying the strategies they have learned. This work is used for assessment purposes and allows the teacher to identify common misconceptions or areas of need. It is also a great opportunity for the teacher to provide individualized descriptive feedback that is directly related to the criteria on the problem-solving checklist.

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OTHER MATH ACTIVITIES BY BLUE SKY SCHOLASTICS:

• Mode and Range 3 Part Lesson & Puzzle and Riddle Worksheets
• Building Graphing Skills
• Creating and Analyzing Scatterplot graphs 3 part Lesson
• Scatter Plot Graphs 3 Part Lesson - Read, Interpret, Draw Conclusions
• Double Bar Graphs Problem Solving Activities (Read, interpret, draw conclusions)
• Probability End of the Unit Summative Assessment Task for Grade 6
• Probability End of the Unit Summative Assessment Task for Grade 7
• Comparing Theoretical Probabilities - A Problem Solving Activity
• Using a probability number line to describe the likelihood of an event occurring
• Converting Fractions to Percentages - A Math Problem Solving Activity
• Using Percent Benchmarks to Estimate Quantities - A Problem-Solving Activity

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