What makes a computational strategy both efficient and effective?
How do mathematical ideas interconnect and build on one another to produce an answer?
How can the four operations in decimals related to one another?
How does one recognize the strategy to be used for a specific operation?
How can models help us understand decimals?
How can we determine the reasonableness of an answer when solving a problem?
How are decimals different from whole numbers?
LP 5.NBT.B.5-7 Multiplying Decimals to Hundredths
Lesson Seed B.5: Standard Algorithm for Multiplication Based on Place Value
Lesson Seed B.7: Addition & Subtraction with Decimals
Content Emphasis By Clusters in Grade 5
Progressions from Common Core State Standards in Mathematics
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Lesson seeds are ideas that can be used to build a lesson aligned to the CCSS. Lesson seeds are not meant to be all-inclusive, nor are they substitutes for instruction. When developing lessons from these seeds, teachers must consider the needs of all learners. It is also important to build checkpoints into the lessons where appropriate formative assessment will inform a teachers instructional pacing and delivery.
Lesson Topic: Multiplication with Decimals
It is critical that the Standards for Mathematical Practices are incorporated in ALL lesson activities throughout the unit as appropriate. It is
not the expectation that all eight Mathematical Practices will be evident in every lesson. The Standards for Mathematical Practices make an
excellent framework on which to plan your instruction. Look for the infusion of the Mathematical Practices throughout this unit.
Coherence of Standards
Across-Grade Coherence: Content Knowledge from Earlier Grades
Within-Grade Coherence: Content from Other Standards in the Same Grade that Provide Reinforcement
Students have the opportunity to practice multiplication skills using whole numbers, while simultaneously extending and
applying this prior knowledge to multiplication with fractions and decimals.
Students have the opportunity to develop for themselves the meaning of multiplication of decimals by replicating and
expanding past knowledge of whole numbers.
Students have the opportunity to observe patterns and to work with models that represent multiplication, such as a 10 × 10
Students will use an understanding of decimal place value and of decimal notation for fractions to multiply decimals.
Method for determining student readiness for the Lesson
The warm-up can be used as a method for determining student readiness.