Seasonal Links
Spring:
Kindergarten Spring Unit: http://learninglynx.blogspot.com/2011/09/preschoolkindie-unit-on-spring.html
Christmas
Gingerbread house: http://learninglynx.blogspot.com/2009/12/how-to-make-gingerbread-house.html
Christmas Trees: http://learninglynx.blogspot.com/2009/12/christmas-tree-links-for-kids.html
History of Christmas Lights and Santa (including the physics of Santa's trip): http://learninglynx.blogspot.com/2009/12/history-of-christmas-lights.html
Halloween
Halloween activities and lessons: http://learninglynx.blogspot.com/2009/10/have-some-halloween-lessons.html
History and Archaeology: http://learninglynx.blogspot.com/2010/01/history-and-archaeology-of-halloween.html
Valentine's Day
Lots of V-day resources: http://learninglynx.blogspot.com/2010/02/valentines-day-resources.html
Fourth of July:
How fireworks work: http://learninglynx.blogspot.com/2013/07/how-fireworks-work.html
Tour a fireworks factory: http://learninglynx.blogspot.com/2013/07/tour-fireworks-factory.html