What to do in Montreal with kids?

[udh]

My family and friends are going to Montreal Sun-Wed. and staying at Marriott Chateau Champlain (underground shopping access). It's March Break in Toronto but not in Montreal, so I am not sure what to do with the kids (all girls, under 10). Is there anything special to do/to see for them? Any special discount? We're driving but I prefer to take metro in Montreal. Do they have a daily family metro pass or 3-day family pass?

Thanks!

[mcbg1]

You can go to the Biodôme. It's great.

[FunkyLady94]

Not sure. The best resource I'd recommend for these types of things is the Marriott Rewards Insider (http://www.marriottrewardsinsiders.marriott.com/search!refine.jspa?q=&custom.forumField.enum.operator=2&custom.themeField.enum.operator=2&custom.city.enum=&custom.forumField.enum=Travel+With+Kids&custom.country.enum=Canada) community - they have a dedicated Travel With Kids forum.