Each year I go to Wolf Maple Farm in Middleport for Maple Weekend and we buy syrup, maple donuts, and maple popcorn among other things. The owner is always nice enough to give me a cup of sap so I can bring it into class and do a little tasting of sap and syrup.
We also watch a youtube video of how syrup is made. Maple Weekend also runs the 23rd and 24th and I highly recommend visiting Wolf Maple as a fun family activity.