snow,
local pharmacy where ? And hor, how you brush zynn's teeth ?
Anyway, experts say exposure helps the kids to learn faster. But i think put there also no use, must have time to teach ! For us, we just keep talking and pointing things to him. And things that he use / do everyday, like shoe, water, eat , sit they will pick up one, cause it's routine teaching. Anyway, you more expert than me man, you have 2 kids leh ! =)