**Example Unit: Y2 Addition & Subtraction Unit Plan**

**Big Mathematical Ideas**

Number lines can help us find the difference between two numbers.

The 4 basic operations are related to one another and are used to process information and solve problems.

**Learning Sequence** (sourced from Booker's development sequences)

**Key Readings**

Teaching Mathematics (Di Siemon) additive thinking p.342. subtraction p.351 rounding numbers p.339

Number Talks (Common Denominator Magazine) & Number Talks Video - Derrimut PS

Additive strategies SURF Maths Scope & Sequence (James Russo)

Resource Name/Type/Link/Source | Mathematical Focus | ||||

Assessment Tasks | Additive Strategies | Estimation & Rounding | Subtraction - take-away | Subtraction - difference | Number Patterns |

Adding the Corners Maths Assessment for Learning p. 31 | ✓ | ✓ | |||

Lucky Dip Maths Assessment for Learning p. 37 (P.33 of Visible Learning F-2 SOLO taxonomy) | ✓ | ✓ | |||

Picture Story Books | Additive Strategies | Estimation & Rounding | Subtraction - take-away | Subtraction - difference | Number Patterns |

Rooster’s off to see the World (Investigation in Engaging with Maths p. 32.) | ✓ | ||||

Equal Shmequal | ✓ | ||||

Warm-ups & Games | Additive Strategies | Estimation & Rounding | Subtraction - take-away | Subtraction - difference | Number Patterns |

Paper Plates | ✓ | ✓ | ✓ | ||

Dot Card Counting | ✓ | ✓ | |||

The 7 Card Game Child-friendly Playing Cards Book p.44 | ✓ | ||||

Visual Patterns | ✓ | ✓ | |||

Number Talks | Additive Strategies | Estimation & Rounding | Subtraction - take-away | Subtraction - difference | Number Patterns |

Addition Across the Grades Making Number Talks Matter p. 79 | ✓ | ✓ | |||

Strategies for subtraction Making Number Talks Matter p. 192 | ✓ | ✓ | |||

Have you got Maths Eyes? | ✓ | ✓ | ✓ | ||

Estimation 180 | |||||

Challenging Tasks | Additive Strategies | Estimation & Rounding | Subtraction - take-away | Subtraction - difference | Number Patterns |

Adding Numbers Efficiently Challenging Mathematical Tasks, p. 16 Peter Sullivan) | ✓ | ✓ | |||

Dominoes (Check the Clues p. 38, Paul Swan) | ✓ | ✓ | ✓ | ✓ | |

Open-ended Maths Activities, (p. 44 qs. 4, 7, 12, 15, Peter Sullivan) | ✓ | ✓ | ✓ | ✓ | |

Investigations | Additive Strategies | Estimation & Rounding | Subtraction - take-away | Subtraction - difference | Number Patterns |

Addo Maths 300 | ✓ | ||||

Domino Trails Maths 300 | ✓ | ✓ | ✓ | ||

Staircases NZMaths | ✓ | ✓ |

**Concepts/Key Terms**

number line, approximate, estimate,