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# Summary:

In this maths lesson plan, students use games on Studyladder, MAB and decks of cards to reinforce trading/renaming when adding and subtracting numbers.

Year 3 Mathematics:
• Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation (ACMNA055)

# Lesson:

Orientation 5 minutes

• Focus: Students attention to activities set out at front.
• Engage: Tell students today they will be doing hands-on maths.
• Access: Show students MAB blocks to help revise yesterday’s lesson.

Guided Discovery

• Revise subtractions using the game:

• Explain and guide students through exploration activity

Exploration

At each table students construct two, four digit numbers using a deck of cards and subtract these

Individualising

• Support: Assist students having difficulties. Students may construct 3 digit numbers instead if 4 digit numbers.
• Extend: Students construct larger numbers to subtract.

Guided Discovery

• Revise addition using the game

•  Explain and guide students through exploration activity

Exploration

• At each table students construct two, four digit numbers using a 9 sided die and add these.

Individualising

• Support: Assist students having difficulties. Students may construct 3 digit numbers instead if 4 digit numbers.
• Extend: Students construct larger numbers to add.

Reflection  5 minutes

• Share/Explain/Justify: Do you think this is a good way of practising subtractions by making up your own problem? Why/why not?
• Consolidate: Misconceptions?
• Reflect: Who is feeling confident about subtraction using the trading system? Why/why not?
• Challenge/Extend:  Create a larger digit number subtraction and ask students who thinks they can solve it?

# Assessment:

• Observation, questioning and product analysis

# Resources:

• Enter keyword: 4 digit addition and search
• Seventh heading- Mathematics > Number and place Value – Addition of large Numbers –Addition of four digit Numbers
• Enter keyword: 4 digit subtraction and search
• Ninth heading- Mathematics > Number and place Value – Subtracting large Numbers –Subtraction of four digit Numbers
• Decks of cards
• 9 Sided dice
• Computers/Interactive Whiteboard
• Concrete resources (MAB) for kids to model with