Numbers represent quantities that can be decomposed into smaller parts
Below is how the official curriculum organizes it. Each strand will get full lessons like the ones in Grade 1 Mathematics.
Number concepts to 10; ways to make 5; decomposing numbers to 10
Change in quantity to 10 using concrete materials; a sense of 5 and 10
Repeating patterns with two or three elements; equality and inequality as balance
Direct comparative measurement; single attributes of 2D shapes and 3D objects
Concrete or pictorial graphs; likelihood of familiar life events
Attributes of coins; financial role-play