For more information, call 978-256-5521. For times and days of events, or to register online, visit the calendar of events at http://chelmsfordlibrary.evanced.info/signup/calendar.
Balloon Sculptures: 10:30 a.m. July 12. Chip Rascal creates a sculpture out of balloons that will be on display in the library when complete. Demonstration only. Drop-in for ages 4 and older.
Mysterious Mars: 7 p.m. July 12. This presentation, led by with Kelly Beatty, lets attendees explore Mars.
Peace Out Pajama Storytime: 7 p.m. July 12 and 19. Stories, rhymes, guided meditation, and breathing games and techniques to help relax before bedtime. For all ages. Attendees should wear PJs.
Friends of the Library Book Sale Drop-Off: 9 a.m. to noon July 14. Drop-offs for the Friends of the Library book sale take place at the gym at the rear of the Town Offices Building, 50 Billerica Road, Chelmsford. The Friends seek books of all kinds in good condition as well as audiobooks, DVDs, CDs, maps and local interest items.
Math Night: 5:30 p.m. July 17. Experts from Mathnasium lead a night of math games. Registration available online. Open to grades 1-12.
Youth Art Studio Mirror Collages: 4 p.m. July 18. For this months art project, participants grade five and higher will use broken CDs to make a collage that will look like a broken mirror.
Concerts at MacKay Night Rhythm Jazz Trio: 6:30 p.m. July 18. Rain location: Chelmsford Senior Center. Drop in for ages 8 and older; concerts for families with young children begin Aug. 1.
PuppeTree: Caps for Sale: 10:30 a.m. July 19. A performance of the original story brought to life, as well as versions from countries around the world. Drop-in for ages 4 and older.
Harry Potter Birthday Crafting Party: 3 p.m. July 19. Teens in seventh grade and higher meet downstairs in the conference room to make decorations and activities for the annual Harry Potter Birthday Party.