Everyday Math Grade 4 – Lesson 2.6 The Median Copyright © 2010 Kelly Mott

Lesson Components: Part 1: Math Boxes 2.6 Page 38Math Boxes 2.6 Page 38 Part 2: ReviewReview Part 3: PowerPointPowerPoint Part 4: Math Journal Page 37Math Journal Page 37 Copyright © 2010 Kelly Mott

Math Boxes Lesson 2.6 Page 38

Copyright © 2010 Kelly Mott Math Box 1:

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Copyright © 2010 Kelly Mott REVIEW

Copyright © 2010 Kelly Mott Name Collection Box 10 1

Copyright © 2010 Kelly Mott Place Value Helpful Hint: You can think of each period as a family.

What number is in the ten’s place? ____________________________ hundred thousand’s place? ________________ ten million’s place? ______________________ thousand’s place? _______________________ Place Value Practice

What number is in the hundred’s place? ________________________ hundred million’s place? __________________ ten thousand’s place? ____________________ million’s place? _________________________ Place Value Practice

Value of a Number Practice 1 Problem #1: 290, 763, 891 What is the 3 worth? ___________________________ Problem#2: 856, 742, 121 What is the 5 worth? ___________________________ Problem#3: 260, 158, 403 What is the 4 worth? ___________________________ Copyright © 2010 Kelly Mott 4

Expanded Form Practice 1 Problem 1: 760,205,301 __________________ + __________________ + __________________ + __________________ Problem 2: 513,048,072 __________________ + __________________ + __________________ Copyright © 2010 Kelly Mott 5

1.The _______________ is the smallest number in a set. 2.The _______________ is the largest number in a set. 3.The _______________ is the difference between the minimum and maximum. (Found by subtracting largest – smallest) 4.The _______________ is the most frequent number in a set of numbers. (It offers the most often.) Copyright © 2010 Kelly Mott Definitions 6

Copyright © 2010 Kelly Mott Lesson 2.6 Organize and Collect Data The Median

1.The _______________ is the middle number in a set. (It is found by listing all of the numbers in a set in order from small to big…then crossing out left…then right…left…then right…until you reach the middle number.) Note: If you have two numbers left in the middle you must add the two numbers and divide by 2. Copyright © 2010 Kelly Mott Definitions 7

Copyright © 2010 Kelly Mott Line Plot - Organize and Collect Data Class Data on Number of Pets Number of Pets Per Family Number of Pets

1.What is the maximum number of pets per family? _________________________________________________________ 2.What is the minimum number of pets per family? _________________________________________________________ 3. What is the range (maximum – minimum)? _________________________________________________________ 4. What is the mode (most frequent) ? _________________________________________________________ 5. What is the median (middle number)? _________________________________________________________ Copyright © 2010 Kelly Mott Interpret Data 9

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Copyright © 2010 Kelly Mott Line Plot - Organize and Collect Data Age of Boys in Our Class Age of Boys Number of Boys 10

1.What is the maximum age? _________________________________________________________ 2.What is the minimum age? _________________________________________________________ 3. What is the range (maximum – minimum)? _________________________________________________________ 4. What is the mode (most frequent) ? _________________________________________________________ 5. What is the median age (middle number)? _________________________________________________________ Copyright © 2010 Kelly Mott Interpret Data 11

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Copyright © 2010 Kelly Mott Line Plot - Organize and Collect Data Age of Girls in Our Class Age of Girls Number of Girls 12

1.What is the maximum age? _________________________________________________________ 2.What is the minimum age? _________________________________________________________ 3. What is the range (maximum – minimum)? _________________________________________________________ 4. What is the mode (most frequent) ? _________________________________________________________ 5. What is the median age (middle number)? _________________________________________________________ Copyright © 2010 Kelly Mott Interpret Data 13

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Does this make sense? Copyright © 2010 Kelly Mott

HOMEWORK Every Day Math Journal Page 37 Copyright © 20010Kelly Mott

Copyright © 2010 Kelly Mott Line Plot - Organize and Collect Data

Copyright © 2010 Kelly Mott Interpret Data