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 [...]