3) A first grader claims that 2-4 = 0 because you can't have anything less that nothing.
How do you respond? (be very specific; use a concrete example and remember that
young children do not understand the abstract concept of negative numbers)
The value of the expression 2 - 4 is - 2 ; which can be illustrated using the concept Analysed below.
For instance :
You have 2 biscuits and you owe your friend 4biscuits which you collected from her at school.
To repay your friend, you give her the 2 biscuits you have which is the essence of the subtractionoperation.
After giving her the two biscuits you have 0 left, however, you still haven't settled your friend. The number of biscuits you have to give your friend in other to finally settle her is the answer to the expression (2 - 4) = - 2
The essence of the negative value is to show that, you still have a deficit of 2 biscuits to give your friend in other to settle your debt.
Therefore, the answer to the expression2 - 4 = - 2
