Addition
STAGE 1
Practical activities with little recording

Adding two single digit numbers with objects.
Explained by a Year 2 pupil.

STAGE 2
Using number lines

Adding two single digit numbers on a number line.
Explained by a Year 2 pupil.
Adding a 2-digit number to a 1-digit number using a number line and a hundred square.
Explained by a Year 2 pupil.

STAGE 3
Using an empty number line

Adding a two 2-digit numbers using an empty number line.
Explained by a Year 2 pupil.

STAGE 4
Partitioning and recombining in tens and units, using apparatus

Adding a 2-digit number to a 1-digit number by partitioning (breaking into tens and units).
Explained by a Year 2 pupil.
Adding two 2-digit numbers using a partitioning method.
Explained by a Year 2 pupil.

STAGE 5

Partitioning and recombining using written methods, number knowledge (known mentally) and number line methods

Adding a 2 digit number to a 2 digit number using a number line
Explained by a Year 3 pupil.
Adding a 2 digit number to a 2 digit number using partitioning
Explained by a Year 3 pupil.

STAGE 6

Formal methods of addition - vertical addition

Adding a 3 digit number to a 3 digit number using vertical addition
Explained by a Year 5 pupil