In this unit...
Students will understand that...
There are multiple strategies and methods for finding an accurate mathematical solution.
The relationship among the operations and their properties increases their flexibility as mathematicians.
Algebraic representations are used to communicate and generalize patterns and relationships.
The context and numbers determine the strategies used to make estimations.
Students will keep considering the following questions:
What strategy am I using to solve the problem? Does it work? Is there another way to solve it?
How do mathematical operations relate to each other?
How can I write a number sentence to represent a problem?
How do I know when I need an exact answer or an estimate?
Students will know:
different ways to represent multiplication and division.
multiplication and division are inverse operations.
different ways to represent addition and subtraction.
addition and subtraction are the inverse operations.
Students will be skilled at:
representing multiplication as a comparison.
using strategies (mental math, partial products, the commutative, associative, distributive properties) and the standard algorithm to solve 2-digit by 1-digit multiplication problems.
determining the unknown using the relationship of multiplication and division.
identifying patterns in related multiplication and division facts.
representing real-world relationships using number pairs in a table and verbal descriptions.
Critical Vocabulary
partial products
standard algorithm
number pairs
table
extend
Methods of Multiplying two digits by one digit:
Vocabulary
Unit 4 Test - Tuesday, February 14th
Extra Practice: