Children entering second through sixth grade can attend GlaxoSmithKline's Science in the Summer program, a free, experiment-oriented course taught at local libraries.

More than 140 libraries in Bucks, Chester, Delaware, Montgomery and Philadelphia Counties, including 18 on the Main Line, will be participating.

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Courses, which vary from county to county, include topics such as physical science and oceanography. Lessons are taught in four 45-minute to 60-minute classes by certified teachers. Fifteen students are in each class.

The program runs from late June to the beginning of August. Registration starts in May.

For registration information, visit www.scienceinthesummer.com or a local library.

Fourth grader Ryan Bowman of Newtown Square was one of several students who got to give Bud Tosti, principal of St. Katharine of Siena Elementary School in Wayne, a head shave recently.

Tosti had promised that the top money raisers at the second annual Miriam Quigley Dance-a-Thon in March would be able to shave off his hair if the school exceeded its 2006 total. The school did.

The event - held in memory of classmate Miriam Quigley, who died from brain cancer in 2005 - raised $96,000 for pediatric brain cancer research at Children's Hospital of Philadelphia.

Students and firms from across the region helped, but St. Katharine students raised $30,000 of the total. Top money raiser and fifth grader Connor McNeill and sixth grader Christina Oliver - both of Newtown Square - also earned the right to shave Tosti's head.

The Radnor High School senior class will present a musical comedy by English teacher and musician Larry McKenna and his creative writing class. The comedy, Celebrities on Trial, will be performed at 7:30 p.m. Wednesday through Saturday at the school auditorium, 130 King of Prussia Rd., Radnor.

The show is about movie, book and popular-culture characters battling for their legal lives. Tickets cost $8 in advance, and $10 at the door.

For more information, contact McKenna at laurence.mckenna@rtsd.org or 610-688-5246.

Cassie Cummings of Bryn Mawr, a junior at the Academy of Notre Dame de Namur in Villanova, recently won the senior musica diversa category of the Tri-County Concert Association's Youth Festival.

Cummings, who plays the harp, was among many student musicians from Chester, Delaware and Montgomery Counties who auditioned.

The festival offers students an opportunity to play before, and receive critiques from, professional judges.

The winners earned scholarships for musical training and the chance to perform at the 65th annual Youth Festival Concert, scheduled for 7:30 p.m. Saturday at Montgomery County Community College's Science Center auditorium, 340 DeKalb Pike, Blue Bell.

The performance is open to the public, and tickets cost $10 at the door. For ticket information, call Bonnie Brebach at 610-853-1041.

Hill Top Preparatory School, 737 S. Ithan Ave., Rosemont, will have its annual Evening of the Arts at 6:30 p.m. Saturday and a daytime session at 1 p.m. next Sunday.

The event, free to the public, is put on by students. It includes displays of artwork, poetry, sculptures, and woodworking projects, as well as singing and a special theatrical show.

For more information, call 610-527-3230 or go to hilltopprep.org.

Jolyon Rollins of Plimoth Plantation, a Mayflower reenactor who portrays Gov. William Bradford, gave performances at three area schools late in April.

At St. Katharine of Siena Elementary School in Wayne, Rollins, wearing a buckskin suit, showed the students an article of clothing called a shift, which is similar to a girls' pullover shirt.

Rollins told pupils that when the Fortune, the second ship to bring settlers to the new world, arrived on the Massachusetts coast in 1622, the passengers were so destitute that they were "shiftless." That word survives in our language today.

Rollins also spoke at Radnor Middle School in Wayne, and General Anthony Wayne Elementary School in Malvern.

For more information about the Society of Mayflower Descendants in the Commonwealth of Pennsylvania, call Win Carroll at 610-517-1056.