Introduction
Welcome, students! Today, we're diving into the world of multiplication, specifically focusing on how to multiply two-digit numbers. Multiplication is like a powerful math tool that helps us solve problems quickly and efficiently.
Have you ever wondered how multiplication is used in everyday life? Think about it: when you're shopping and see prices, when you're calculating how many items fit in a box, or even when you're planning a party and need to know how much food to buy for everyone. Mastering multiplication can make these tasks much easier!
Task
What Will We Learn Today?
- Understanding the Process: We'll break down the multiplication process step-by-step, so it feels manageable.
- Using the Area Model: We’ll explore a visual method called the area model, which helps us understand how multiplication works.
- Partial Products: We’ll learn about the partial products method, a strategy that allows us to multiply two-digit numbers by breaking them into more manageable parts. This approach makes it easier to visualize and calculate the total.
- Practice Makes Perfect: We’ll practice with various examples, and I’ll be here to guide you every step of the way.
Process
To begin the lesson we do the Solve and Share:
A theater has 14 rows of seats with 23 seats in each row. How many seats are in the theater? Solve this problem any way you choose
https://www.savvasrealize.com/dashboard/program/bfefccd3-d0d4-3b3f-b20f-d8f22603a60b/50/tier/b872541d-30fd-3f6c-86ca-8918bed568e2/50/lesson/e936fe1b-0e1a-323f-ba2d-bec1ef49c661/50/lessonPlanner/cv/297203c4-3f2b-398f-b4d8-159bfaf268dd/70
Next we will watch a video on area models
and watch a video on partial products
After watching the videos we will work on different problems in the workbook on page 143-144
Evaluation
I will assign problems from the Envision Mathematics workbook that focus on multiplying two-digit numbers using both the area model and partial products. Please show all of your show to get FULL CREDIT!
Conclusion
Today, we learned how to multiply two-digit numbers using the area model, where we broke down each number into tens and ones to visualize the multiplication. We also explored the partial products method, where we calculated the individual products of each part and then added them together.Mastering multiplication takes time and practice. Using these strategies regularly will help them become more confident in your multiplication skills.Next week, we’ll explore how to use these multiplication skills in long division and word problems. Mastering these strategies now will be incredibly beneficial as we progress.Great job today, everyone! I’m impressed with how well you engaged with the material and supported each other. Keep practicing, and you’ll continue to improve!
Credits
This web quest introduces the concept of multiplying two-digit numbers. You can follow along using your Envision Math textbook or access Savvas Online for digital resources. We will be working with the worksheets provided in the book, but you are welcome to use an alternative worksheet if you prefer.
Students will learn to apply the partial products method and the area model to multiply two-digit numbers effectively. If you don’t have access to Savvas or Envision Math, there are many similar worksheets available online that you can utilize.
Standards
4.OA.3
Solve multistep (two or more operational steps) word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. 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.
4.NBT.5
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.