Objective
Solve word problems that involve the addition and subtraction of fractions where the total is less than or equal to one.
Common Core Standards
Core Standards
The core standards covered in this lesson
4.NF.B.3.D— Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.
Number and Operations—Fractions
4.NF.B.3.D— Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.
Criteria for Success
The essential concepts students need to demonstrate or understand to achieve the lesson objective
- Make sense of a three-act task and persevere in solving it (MP.1).
- Solve one-, two-, and multi-step word problems that involve the addition and subtraction of fractions less than or equal to 1 (MP.4).
Tips for Teachers
Suggestions for teachers to help them teach this lesson
Let students work on each problem in the Problem Set independently and circulate to see whether students are solving correctly. If not, come back together to discuss how/what to draw on a tape diagram, then allow them to try again on their own.
Fishtank Plus
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Anchor Tasks
Tasks designed to teach criteria for success of the lesson, and guidance to help draw out student understanding
25-30 minutes
Problem 1
Act 1: Watch the following video:A Delicious Mix.
a.What do you notice? What do you wonder?
b.What fraction of each kind of candy is in the bag?
Guiding Questions
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References
Ms Castillos Math 3 Act: A Delicious Mix
3 Act: A Delicious Mix by CatherineCastillo is made available on Ms Castillos Math. Accessed July 17, 2018, 11:39 a.m..
Modified by Fishtank Learning, Inc.
Problem 2
Act 2:Use the following information to solve.
Guiding Questions
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References
Ms Castillos Math 3 Act: A Delicious Mix
3 Act: A Delicious Mix by CatherineCastillo is made available on Ms Castillos Math. Accessed July 17, 2018, 11:39 a.m..
Modified by Fishtank Learning, Inc.
Problem 3
Act 3: Reveal the answer.
Was your answer reasonable? Why or why not?
Guiding Questions
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References
Ms Castillos Math 3 Act: A Delicious Mix
3 Act: A Delicious Mix by CatherineCastillo is made available on Ms Castillos Math. Accessed July 17, 2018, 11:39 a.m..
Modified by Fishtank Learning, Inc.
Problem Set
15-20 minutes
Problem Set
Answer Keys
Unlock the answer keys for this lesson's problem set and extra practice problems to save time and support student learning.
Discussion of Problem Set
- How many students played either soccer or basketball in #2? What role does the word “or” serve in this problem?
- I think the answer to #4is $${{7\over8}}$$. Do you agree or disagree with me? Why?
- How did you decide what the possible mass of the music and art books was in #7(b)?
- What was the total amount of toppings, in gallons, in #8? What is another way to represent this amount?
Target Task
A task that represents the peak thinking of the lesson - mastery will indicate whether or not objective was achieved
5-10 minutes
Problem 1
Solve. Show or explain your work.
Gauvain had $$5\over 6$$yard of ribbon. He used $$3\over 6$$to tie a bow on a gift. How much ribbon did he have left?
Problem 2
Solve. Show or explain your work.
Of the books Ayala read this year, $$1\over 12$$were science fiction books and$$7\over 12$$ were mysteries. What fraction of the books were neither science fiction nor mysteries?
Student Response
An example response to the Target Task at the level of detail expected of the students.
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Additional Practice
The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.
Extra Practice Problems
Extra Practice Problems
Answer Keys
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Word Problems and Fluency Activities
Word Problems and Fluency Activities
Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.
Lesson 3
Lesson 5
