There are 24 progressive activities in A4 format, distributed among 6 series of 4 worksheets completed with a collection of small worksheets with the symbols > / < / =. The activities have a growing level of difficulty and they are numbered for each series from 1 to 4. Each activity has been carried out in such a way that the child acts with total autonomy. The teaching guide shows all the detailed contents for the teacher's use. With this pack, the child will discover number decomposition, operations (adding, substracting and multiplication) and comparison and equivalences between whole numbers/tens/hundres/thousands. The activities are made of plastic cards for greater durability in the classroom.