I am teaching about Pesach in a Chabad House preschool. Some children are somewhat Frum/modern orthodox. Can I allow the children to taste Matzah from last years Shmura Matzah?
One may eat Matzah till Erev Pesach. Chabad custom is not to eat it thirty days before Pesach, but this custom is not practiced universally.
Even according to Chabad custom, children that are not of age to understand that which is related to them about Yetzias Mitzrayim may eat Matzah.