Here’s some stuff to do this weekend for kids and adults alike. For more upcoming local events, visit our Happenings page.

• Saturday, July 21, 11:30-3 p.m., White Rock Baptist Church (5240 Chestnut St.) – Community Science Carnival

The First Annual Community Science Carnival is organized by the Science Education Academy, a community partnership between the White Rock Baptist Church and the Ernest E Just Biomedical Society at the University of Pennsylvania. Children from grades K-6 are invited to be Curious Scientific Investigators and assist Penn graduate students and Post-doctoral fellows with scientific experiments. Children will learn about microbes, how to make batteries with potatoes, how planes fly and how to solve mysteries using chemistry! Parents are welcome too – there will be a workshop on how to help your children with science fair projects. See the flyer for details. This is a free event and open to the public. RSVP is not required but appreciated – email sea.philly2008@gmail.com or call 215-882-9797.

• Saturday, noon-6 p.m., Saunders Park (39th & Powelton Ave.) – Lancaster Avenue Jazz and Community Arts Festival

Also this Saturday, don’t miss the Lancaster Avenue Jazz and Community Arts Festival taking place at Saunders Park in the Powelton Village section of West Philadelphia. Doc Gibbs & Friends, Glenn Bryan & Reference Point and Planet Jazz will perform. Also there will be free family activities, a moon bounce, crafts, a vendor market and more. We also hear that  a shredder truck will make a stop at the park from 11 a.m. to 3 p.m., so bring all that used paper cluttering your house and then enjoy some great music. For more information, visit the event’s Facebook page.

• Sunday, July 22, 11 a.m.-12:30 p.m., The Rotunda (4014 Walnut Street) – Kripalu Yoga Preview Class

Kripalu Yoga classes begin at The Rotunda in August and a free preview class is being held this Sunday, from 11 a.m. to 12:30 p.m. Kripalu Yoga is a form of Hatha Yoga using standard yoga poses, inner focus, breathwork, meditation and relaxation. For more information, contact Katie Bonier at kripaluyogaphilly@gmail.com or visit www.therotunda.org.

If your child is entering Philadelphia School District Kindergarten this fall and needs some extra help getting ready for the first day of school, here’s a program that can help. Lucien E. Blackwell Regional Library (52nd & Sansom) is hosting Ready, Set, Kindergarten, an interactive program for parents and children, tomorrow, June 26, from 6 – 7:30 p.m. Families will play educational games and will learn about important skills for Kindergarten. Families will also leave with fun, educational giveaways.

Ready, Set, Kindergarten is a new initiative started in partnership with The School District of Philadelphia, LEARN, The Free Library of Philadelphia and Please Touch Museum.

To register, please contact: Betsy Vassallo, 267-350-2863, learn@ccisnephila.com. See the flyer for more information.

Ann Schwartz, a musician skilled in a wide range of instruments and with over 15 years of music teaching experience, is launching The Green Tambourine, a new series of interactive music programs for kids ages 0 to 10 years at The Rotunda (40th & Walnut). The programs include musical playgroups for babies and little kids and group instrumental lessons for older children. Musical playgroups are divided into the following age groups: birth-9 months, 2 & 3 year olds, 4 & 5 year olds, and Toddler Class (10-23 months). The first 6-week session includes one class per week every Friday kicks off on June 22.

The Green Tambourine also offers group violin and guitar lessons for kids ages 6-10 beginning in September. The lessons are taught once a week on Thursdays and are also offered in 6-week sessions. Participants will need to bring their own instrument.

To sign up for classes and for more information, please visit The Green Tambourine’s website or contact Ann Schwartz at (215) 360-3215, info@thegreentambourine.com. A special 20% Class Kickoff discount is offered. Scholarships and other discounts are also available.

This Friday and Saturday, June 15 & 16, The Green Tambourine will be at Clark Park from 10 a.m. – 12 p.m. for some musical free play.  You and your kids are welcome to stop by to meet the class facilitator,  get more information on programs and most importantly, play music!

Public Citizens for Children and Youth (PCCY) and the American Dental Association are hosting “Give Kids a Smile Day” on Wednesday, June 20, when dentists across the city will be providing free dental care to Philadelphia children. PCCY has recruited two dozen dental sites that have created space for hundreds of children to receive essential oral health care services. The participating dental clinics in West Philly are Kids Smiles (two locations), Gentle Dental, and University Square Dental.

Participating dentists will provide free screenings, cleanings and sealants and some will also fill cavities.  Appointments are required.

To make an appointment for your child at the office closest to you, call PCCY at 215.563.5848 extension 32 (please do not call the dental offices directly). You will need to provide the following information: your name, your child’s name and age, a phone number where you can be reached between 9 and 5, and your zip code.

The Philadelphia Episcopal Cathedral on the corner of 38th and Chestnut Streets is offering free lunches for children up to 18 years of age (21 years if disabled) in its air-conditioned main church this summer. Lunch will be served from 12 noon to 1:30 p.m. Mondays through Thursdays from Monday, June 18 to Thursday, August 9.

The lunches will offer children 1/3 of their nutritional requirements for the day, according to the Cathedral. There will also be simple art activities and games for kids.

The Cathedral is also looking for volunteers to assist with this program. You can work one day a week, one week, or come for several days. If you would like to volunteer, please contact Stacey Middleton at karolmel_2000@yahoo.com or Meredith Wiggins at dancingturnips@yahoo.com or 626-487-5929.

Contact the Cathedral at 215-386-0234 with any questions.

This Friday, May 18, from 11 a.m. to 2 p.m. there will be a “Super Swap” of baby, toddler, children’s and maternity clothing, toys, books and gear at the Greenfield Intercultural Center (3708 Chestnut Street), and all parents are welcome to bring clean, gently used items. Boys, gender neutral and older kids’ clothing are especially appreciated.

Make a minimum $5 donation at the entrance to benefit the New Parents @ Penn Group and take what you need/want.

You do not need to bring items to swap in order to participate. All remaining items will be donated to a local women’s charity.

You can drop off items two days before the swap and no later than 10 a.m. on the day of the swap.

To help set up, clean-up or if you have questions contact: Sarvelia Peralta-Duran at sarvelia.peralta@gmail.com. To be added to the Swap distribution list please request to join the Super Swap Yahoo group at http://groups.yahoo.com/group/SuperSwap/

This Super Swap is an initiative in collaboration with the Penn Women’s Center, Greenfield Intercultural Center and the Penn Family Resource Center.