After playing an interactive game online, students explore the concept of multiplying with a 2-digit number. Initially the teacher models with MAB and on the board using a grid and then the students go off and continue working.

Year 3

• Recall multiplication facts of two, three, five and ten and related division facts (ACMNA056)
• Represent and solve problems involving multiplication using efficient mental and written strategies and appropriate digital technologies (ACMNA057)

Orientation 5  minutes

• Focus: Students attention to game on board.
• Engage: Play multiplication game to check students’ level of understanding http://www.math-play.com/one-digit-by-two-digit-multiplication-game.html
• Access: Who knows how to multiply by 2-digit numbers?

Guided Discovery

• Demonstrate multiplication by 2-digit numbers on whiteboard. Explain how this is similar to the trading we use in addition.
• Play game to further enhance student understanding about multiplication by 2-digit numbers. http://www.math-play.com/one-digit-by-two-digit-multiplication-game.html

Exploration

• Students demonstrate their understanding of multiplication by 2-digit numbers by attempting to complete a worksheet.

Individualising

• Extend: Students assist their peers who require support.
• Support: Teacher assists those who are having difficulty.

Reflection  5  minutes

• 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?

Assessment:

• Observation and product analysis

Resources:

• 2 Digit Multiplication Worksheets
• MAB to model
• Whiteboard and markers
•  http://www.math-play.com/one-digit-by-two-digit-multiplication-game.html (External Link)

 

[wpfp-link]

 

If you like this lesson, or have an idea to improve it, please consider sharing it on Twitter, Pinterest and Facebook or leave a comment below.