Teacher: Okay Timmy… If I give you two rabbits, and then I give you three rabbits. How many rabbits do you have?
Timmy: Six!
Teacher: No, try again… First I give you two rabbits, and then I give you three more rabbits. So how many rabbits do you have?
Timmy: Six!
Teacher: No, don’t guess Timmy, try to work it out, okay?
Timmy: Okay… I already got one rabbit, but you give me two rabbits [...]