A teacher of class I asks a student to count the total number of objects in a collection of pens, erasers and sharpeners. The student puts all the objects in a line and starts counting. He says that there are 2 pens, 5 erasers and 3 sharpeners instead of 10 objects. In which principle/principles of counting do you think that the student is facing difficulty?
1
Stable order and abstraction principles
2
One to one correspondence principle
3
Abstraction principle
4
Abstraction and order irrelevance principles