how do you solve take-apart problems? students had a choice of playing inside or outside for recess....
TRANSCRIPT
How do you solve take-apart problems?
Students had a choice of playing inside or outside for recess. 12 children went outside. 8
of them played on the swings, and the rest played soccer. How many played soccer?
In this lesson you will learn how to solve take-apart problems by
using a bar graph.
Let’s Review
A bar graph has axes.
vertical axis
Pets Number
Fish 4
Dog 5
Rabbit 3
Bird 2
Fish
Dog
Rabbit
Bird
Data from a table can be shown in a graph.
horizontal axis1 2 3 4 5 6
Pet Store Animals
Let’s Review
A take-apart problem asks you to “take apart” a whole.
There were 10 children playing tag in the park. 7 of the children were girls. How many were boys?
7 ?
10
girls boys
10-7 = 3
Core Lesson
Identify what the problem is asking.
Students had a choice of playing inside or outside for recess. 12 children went outside. 8 of them played on the swings, the rest were playing soccer. How many played soccer?
8 ?
12
swings soccer
A Common Misunderstanding
Thinking the whole is a part.
Students had a choice of playing inside or outside for recess. 12 children went outside. 8 of them played on the swings, the rest were playing soccer. How many played soccer?
8 12
swings soccer
? whole
part part
12
?
Core Lesson 12
8
12
swings soccer
1234567891011
?
4 ?
Recess Activities
In this lesson you have learned how to solve take-apart
problems by using a bar graph.