Area Multiplication
Area Multiplication Model Song
Multiplying Using the Area Model
Multiplying Using the Area Model
Overview
The area model is a great strategy for students to use to solve mulitplication problems. It is an excellent visual tool that can help students gain a deeper understanding of the traditional method of multiple digit multiplication. This lesson has been designed for students to use the area model to solve problems that require them to multiply a two digit number by a one digit number.
Subject: Mathematics, Numbers and Operations
Outcome: MA2-6NA - uses mental and informal written strategies for multiplication and division.
Grades: Year 4
Material Type: Lecture, interactive, activity/assessment
Author: Kylie Booth
Area Model Multiplication Song
A farmer takes us on a tour of his farm by the sea as he plants his new crops. As he plants a field of green beans, he'll be showing us how to multiply two-digits by two-digits using the area model, using geometric models to show a deeper understanding of the mechanics of multiplication is something that is a regular part of Farmer Maslow's everyday life.
Listen to the song, it is about a farmer planting his crops. After watching the video you are to list the steps taken to work out the number of crops planted or draw a model of this procedure.
Explore
Watch this descriptive video on multiplying using the area model. Write down the steps required to solve a multiplication problem using the area model.
Watch this descriptive video on multiplying using the area model. Write down the steps required to solve a multiplication problem using the area model.
Basketball Game
Students will take part in an interactive basketball game, this is a great way for them to practice their multiplication skills. They may choose to work with a partner or individually.
Exploration
Students wil demonstrate their understanding of the area multiplication model by solving a range of two digit by one digit problems. The "Toy Store" activity gives students the opportunity to calculate the total amount of money spent at the "store." Students multiply the quantity times the price to get the total, as they progress they wil have to add a number of totals to get the overall answer.
Please show your working out in your maths books.
1. If I bought 2 remote control cars, it would cost me?
2. If I bought 5 digital cameras it would cost me?
3. If I bought 3 Legos and 2 Wubble Bubbles it would cost me?
4. If I bought 3 art kits, 2 Pictionary games and a remote control car, it would cost me?
5. If I bought 3 Madden 16 games, 4 Nintendo 3DS games and 2 Legos, it would cost me?
Area Multiplication
Students will consolidate their learning by completing the worksheet. It wil need to be printed and completed, you may decide to have students work individually, in pairs or groups, depending on their abilities.
You will need to print off the worksheet and complete it.
Reflection
- Share/Explain/Justify: Share answers so whole class can check their answers.
- Reflect: Let those who got questions wrong discuss where they made a mistake.
- Consolidate: Explain to student that it is tricky not to get trading in addition, subtraction and multiplication mixed up. How can we overcome this complication?
- Challenge/Extend: Who thinks they can multiply by a 3-digit number?
Reflection -
Tell me something new you learned?
Did you find this strategy helpful? Why/Why not?
Do you think you would be able to solve three digit by one digit multiplication problems using this strategy?