Science Experiments For Young Children

That is a project of the Science Fair, and the question I experiment is as follows: The medicine of children taken for candy? So how many children do I need to test?

project impossible. you need to know much more about statistics and probabilities
define "young children"

ALL children do not know the difference. It is for this reason that the baby will put everything in her mouth

You can read the research, but you can not make any real experience.

Even scientists have trouble setting up an experiment that has a legal and safe way

I do not want to "register", but I recommend you change your project

at least 30 to be statistically viable.