Developing Strategies for Multiplication and Division

What are some important mathematical properties involved in solving multiplication and division problems?

• commutative property

• associative property

• distributive property

• All of the above

Tags

CCSS.3.OA.B.5

The standard algorithm is the only way students should be solving multiplication or division problems.

• Yes, it's the best method.

• No, students can manipulative numbers to become easier to work with, providing an easier strategy for solving than just the standard algorithm. There can be many ways to solve a problem.

Tags

CCSS.4.NBT.B.5

What is an array?

• A grid with rows and columns with an equal amount in each row and column.

• I have no idea.

• Something related to math?

• A wide range of strategies to solve a problem.

Tags

CCSS.3.OA.A.1

What should you begin with when teaching the standard algorithm for multiplication?

• Have students talk to their neighbor to see if they know how to use it

• A cold start. Give students the problem independently and have them go for it.

• modeling

Tags

CCSS.4.NBT.B.5

What are some commonly used strategies used to solve division problems?

• Missing-Factor

• Cluster problems

• Break apart/decomposition

• All of the above

Tags

CCSS.4.NBT.B.6

CCSS.5.NBT.B.6

Is repeated subtraction a useful strategy for solving a division problem?

• Yes, it might help students understand how the answer relates to the question.

• No, it's time consuming.

Tags

CCSS.4.NBT.B.6

CCSS.5.NBT.B.6

How can you formatively assess for understanding of division algorithms?

• Call on different students to explain individual steps using the appropriate terminology

• Use an observation checklist to record student responses

• Conduct interviews with students to explore their level of understanding when you see them having difficulty

• All of these are forms of formative assessment.

Tags

CCSS.3.OA.C.7

Why is teaching computational estimation useful?

• It helps students understand the number world around them and will help them as they enter into it as adults (to estimate tax, miles per gallon of gas, etc.)

• It helps students notice when they've made a mistake somewhere or with their calculator.

• It doesn't help at all!

• Students need to be able to guess answers efficiently in order to do well in school.

Would it be useful for teachers who still struggle with multiplication and division concepts to review this chapter?

• Yes, it reteaches the basics and important teaching points to focus on when presenting it to students.

• No, teachers don't need to fully understand the content they're teaching. Knowing the gist is enough.

Tags

CCSS.3.OA.D.9

(T/F) It's important for students to develop flexible strategies to solve multiplication and division problems.

• True

• False

Tags

CCSS.3.OA.C.7