5 Things To Know: Sept. 3-9

1. Today is Labor Day: find out and .

2. Tuesday marks the first day of 2012-2013 classes for Lower Merion School District students. For those curious about how the school days will affect traffic patterns: 

•  and  high schools will be in session every weekday from 7:30 a.m. to 2:40 p.m.
•  and  middle schools, from 8:20 a.m. to 3:05 p.m.
• , , ,  and  elementary schools, from 9:05 a.m. to 3:35 p.m.

3. Friday, Sept. 7 is First Friday in Ardmore. Check out a variety of blues artists playing at venues throughout town, free of charge, as well as local art. Check out the First Friday Main Line website for a complete schedule of events, and check back with Patch later this week for some more details.

4. Have an old TV or microwave to get rid of? Whole Foods in Wynnewood will be accepting "anything with a plug" on Saturday from 9 a.m. to 2 p.m. for its electronics recycling event. .

5. and will celebrate the 21 100-year-old institutions in Bryn Mawr. There will be free historical bus tours and fire truck rides, circus performances, roving entertainers and sidewalk sales throughout downtown Bryn Mawr. The farmers market will also be open from 9 a.m. to 2 p.m.