Curriculum / Math / 3rd Grade / Unit 2: Multiplication and Division, Part 1 / Lesson 16
Math
Unit 2
3rd Grade
Lesson 16 of 21
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Lesson Notes
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Solve two-step word problems involving all four operations.
The core standards covered in this lesson
3.OA.D.8 — Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. This standard is limited to problems posed with whole numbers and having whole-number answers; students should know how to perform operations in the conventional order when there are no parentheses to specify a particular order (Order of Operations).
The foundational standards covered in this lesson
3.NBT.A.2 — Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
The essential concepts students need to demonstrate or understand to achieve the lesson objective
Suggestions for teachers to help them teach this lesson
Unlock features to optimize your prep time, plan engaging lessons, and monitor student progress.
Tasks designed to teach criteria for success of the lesson, and guidance to help draw out student understanding
25-30 minutes
Act 1: Watch the video Sugar Act 1.
a. What do you notice? What do you wonder?
b. How many sugar packets are there? Make an estimate.
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Hey Look! I Made a 3-Act! is made available by Joe Schwartz on Exit 10A. Accessed Oct. 10, 2018, 4:10 p.m..
Act 2: Use the following information to determine how many total packets there are –
Act 3: There are 110 packets of sweetener. Was your estimate reasonable? Why or or why not?
Act 4 (sequel):
The teachers have used 75 of the packets in the video. If they use 5 packets of sweetener per day, how many days will the remaining packets last?
15-20 minutes
Problem Set
A task that represents the peak thinking of the lesson - mastery will indicate whether or not objective was achieved
5-10 minutes
Mason buys a container of strawberries. There are 27 strawberries in total in the container. He eats 3 strawberries right when he gets home. He then puts the remaining strawberries into baggies of 4 strawberries each to have every day as a snack. How many days will his strawberries last? Show or explain your work.
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
Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.
Next
Create scaled picture graphs where the scale is provided.
Topic A: The Meaning of Multiplication and Division
Identify and create situations involving equal groups and describe these situations using the language and notation of multiplication.
Standards
3.OA.A.1
Identify and create situations involving arrays and describe these situations using the language and notation of multiplication.
Identify and create situations involving unknown group size and find group size in situations.
3.OA.A.13.OA.A.23.OA.A.3
Identify and create situations involving an unknown number of groups and find the number of groups in situations.
Relate multiplication and division and understand that division can represent situations of unknown group size or an unknown number of groups.
3.OA.A.13.OA.A.23.OA.A.33.OA.B.6
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Topic B: Multiplication and Division by 2, 5, and 10
Build fluency with multiplication facts using units of 2, 5, and 10.
3.OA.A.13.OA.C.7
Demonstrate the commutativity of multiplication.
3.OA.B.5
Build fluency with division facts using units of 2, 5, and 10.
3.OA.A.23.OA.B.63.OA.C.7
Solve one-step word problems involving multiplication and division using units of 2, 5, and 10.
Topic C: Multiplication and Division by 3 and 4
Build fluency with multiplication and division facts using units of 3.
3.OA.A.13.OA.A.23.OA.B.53.OA.B.63.OA.C.7
Build fluency with multiplication and division facts using units of 4.
Solve one-step word problems involving multiplication and division using units of 3 and 4.
Topic D: More Complex Multiplication and Division Problems
Determine the unknown whole number in a multiplication or division equation relating three whole numbers, including equations with a letter standing for the unknown quantity.
3.OA.A.43.OA.C.73.OA.D.8
Solve one-step word problems involving multiplication and division and write problem contexts to match expressions and equations.
Solve two-step word problems involving multiplication and division.
3.OA.D.8
Topic E: Scaled Picture and Bar Graphs
3.MD.B.3
Create scaled picture graphs where the scale must be determined.
Create scaled bar graphs where the scale is provided.
Create scaled bar graphs where the scale must be determined.
Solve one- and two-step word problems using information presented in scaled picture and bar graphs.
3.MD.B.33.OA.D.8
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