Unit 4, Lesson 1
Estimemos y encontremos productos
Grado 5
Preparation
Lesson Narrative
In IM Grade 4, students multiplied two-digit numbers by two-digit numbers and up to four-digit numbers by one-digit numbers, using strategies based on place-value understanding and the properties of operations. Students learned a partial-products strategy for multiplication and represented it with diagrams and equations. This lesson gives teachers an opportunity to see how students apply previous work to estimate and find products. Expect to see a wide range of strategies from students, and be sure to listen to them as they explain their reasoning. In the Activity Synthesis, the strategies highlighted involve place value and the properties of operations, which will be built on in future lessons.
- Engagement
None
- Describe (orally and using other representations) strategies for multiplying a two-digit number by a one-digit number, by a two-digit number, and by a three-digit number.
- Explain (orally and in writing) strategies for estimating the product of a two-digit number and a three-digit number.
- Estimemos y calculemos productos.
Required Preparation
None
Teacher Reflection Questions
What unfinished learning or misunderstandings do your students have about multiplication? How did you leverage those misconceptions in a positive way to further the understanding of the class?