The slides are comprehensively linked to associated pedagogical guidance in the NCETM Primary Mastery Professional Development materials. There are also links to the ready-to-progress criteria detailed in the DfE Primary Mathematics Guidance 2020.

### Learning outcomes

# | Title |
---|---|

1 | Pupils combine two or more parts to make a whole |

2 | Pupils explain that addends can be represented in any order. This is called the commutative law |

3 | Pupils explain that the = sign can be used to show that the whole and the sum of the parts are equal (1) |

4 | Pupils explain that the = sign can be used to show that the whole and the sum of the parts are equal (2) |

5 | Pupils add parts to find the value of the whole and write the equation |

6 | Pupils find the missing addend in an equation |

7 | Pupils partition a whole into two parts and express this with a subtraction equation |

8 | Pupils make addition and subtraction stories and write equations to match |

9 | Pupils represent ‘first, then, now’ stories with addition equations (1) |

10 | Pupils represent ‘first, then, now’ stories with addition equations (2) |

11 | Pupils represent ‘first, then, now’ stories with subtraction equations (1) |

12 | Pupils represent ‘first, then, now’ stories with subtraction equations (2) |

13 | Pupils represent different types of stories with subtraction calculations |

14 | Pupils make addition and subtraction stories, writing equations to match |

15 | Pupils work out the missing part of an addition story and equation if the other two parts are known |

16 | Pupils work out the missing part of a subtraction story and equation if the other two parts are known |

17 | Pupils explain that addition and subtraction are inverse operations (1) |

18 | Pupils explain that addition and subtraction are inverse operations (2) |

19 | Pupils use additive structures to think about addition and subtraction equations in different ways |