Saturday: Sand Sculpting Concert, registration required for artists at the Coney Island Boardwalk, Surf Ave. and West 20th Street, 11 am to 4 pm, free. http://www.eventbrite.com/e/25th-anniversary-coney-island-sand-sculpting-contest. Brooklyn Renaissance Festival with music, art, food and a solar-powered stage, Noon–10 pm, free, 2501 Pitkin Ave. at Berriman Street, http://www.cypherleague.com.
Fly NYC Kite Flying Festival, 11:00 a.m.–4:00 p.m. Kite-making kits will be provided for children and live music groups will play all day at Pier I in Riverside Park South, Manhattan, enter the park at 68th and Riverside, free. The Kings of Freestyle celebrating freestyle rap, Stevie B. and the Sugarhill Gang joins 10 artists, 8 pm, $50 at Kings Theatre, 1027 Flatbush Ave. between Beverly Road and Tilden Avenue, http://www.kingstheatre.com. Crazy Since Da 90s with a celebration of the hip-hop, R&B, house, and alternative music of the 90’s starts at 10 pm, free before 11 p.m. with RSVP; $5 after at Union Hall, 702 Union St. at Fifth Avenue, http://www.unionhallny.com.
How The Stars Stand in Sara Morawetz’s “How The Stars Stand,” she will live according to Mars time for a full cycle – that would see her ‘day’ gradually separate from Earth time and slowly return to synchronicity, over the course of 37 days. Saturdays, 2–7 pm until Saturday, Aug. 22 free at Open Source Gallery, 306 17th St. at Sixth Avenue, http://www.open-source-gallery.org. Intro to Tai Chi and Qigong, let your doctor know you’ll be taking an exercise class. Wear comfortable, loose-fitting clothes. RSVP call (866) 469-0999, 11:30 am – 12:30 pm and 12:45 – 1:45 pm, free at EmblemHealth Harlem, 215 W 125th Street New York, NY. Poetry Reading and Short Film Screening, live music by jazz band Water Brain, video projections by Miho Morita, and a screening of a short film by Charlotte Lagarde, 6:30 pm, free, J+B Design and Café, 300 Seventh St., http://jplusbdesign.com. Jazz ensemble summer concert at Brooklyn College, 8 pm, $10, 2950 Bedford Ave., between Avenue I and Campus Road, Studio 312, Roosevelt Hall, http://www.ipmw.org. “Summerscapes” and “Black & White” are Brooklyn Waterfront Coalition’s two summer shows: from dreamscapes to cityscapes, and “Black & White” shows 81 pieces in all media in more than 50 shades of grey, Saturdays and Sundays, 1–6 pm until Sunday, Aug. 23, free at 499 Van Brunt St., near Reed Street, http://www.bwac.org. Night Sky with urban rangers discussing the science, history, and folklore of the universe. Night Sky programs highlight the history and folklore of the solar system, using the naked eye to locate stars and planets at Fort Greene Park Visitor Center, 9 pm to 11 pm, free, enter park at Myrtle Avenue and Washington Park.
B’rook’lyn Chess Festival, 10:00 a.m.–4:00 p.m. Learn to play chess, compete, sharpen your skills, meet and play a chess master, no need to bring your board. All chess boards will be provided. Park Circle in Dr. Ronald McNair Park, Brooklyn which is next to the Botanical Gardens and Brooklyn Museum. Pre-register at bkchessfestival.eventbrite.com. A Splash from the Beach, 12:00 p.m.–2:00 p.m. with volleyball and spikeball, fishing’ for prizes. There will be boardwalk carnival games, a photo booth, and sand table at Williamsbridge Oval Recreation Center in Williamsbridge Oval, 3225 Reservoir Oval East, Bronx. Saturday and Sunday: Jazz Age Lawn Party filled with flappers and swells heading to the biannual Jazz Age Lawn Party at on Governors Island. This celebration of 1920s style and culture takes over Colonels Row lawn as folks in period dress gather to listen to old Victrolas spinning 78s and sip summery gin cocktails. There will also be performances by the Dreamland Orchestra the tap-dancing Minsky Sisters and jazz singer Queen Esther.
Sunday: Bicycle Scavenger Hunt on two wheels. Each team must include a Brompton bike, which are available to borrow free. Prepare for a full day of riding. Profits will benefit Transportation Alternatives, 10 am, $25 at Rough Trade NYC, 64 N. Ninth St. between Kent and Wythe Avenues http://www.roughtradenyc.com. Inventors Club: Elias Howe at The Green-Wood Inventors Club on Elias Howe, inventor of the sewing machine, noon, free at the Green-Wood Cemetery, Fifth Avenue and 25th Street, http://www.green-wood.com. Historic New York: The World’s Fair, 10:00 a.m.–12:00 p.m.
Flushing Meadows Corona Park was host to two twentieth-century World’s Fairs. Rangers will be hosting a historic walk through the1939-1940 and 1964-1965 site of the World’s Fair, now known as Flushing Meadows Corona Park at the Unisphere in the park in Queens. Dirtybird BBQ, the Dirtybird house music label brings beats and burgers to an all-day party, at a location announced only to ticketholders, 2–10 pm. $35, Enb251@nyu.edu, http://ticketf.ly/1BD9S3e. “Teach It Right, or, Right to Teach” as school faces issues with funding arts, music, libraries, and more overcoming the limits thrown on them with community activism, with live music 2 pm, free at Herbert Von King Park, 670 Lafayette Ave. between Tompkins and Marcy Avenues, http://www.jsnyc.com.
Homebrew Takedown is part of a food-centric competition series with crafty Brooklynite beer lovers bringing the fruits of their D.I.Y. efforts to Hill Country BBQ to be judged. Sample eighteen different suds, coupled with Texas-style brisket, sausage, or turkey, and all the classic sides. Reps from Bitter & Esters, a Prospect Heights home brewing emporium, and Queens Brewery, evaluate the offerings, with input from the audience. Winners take home goodies from cookware companies like Cuisinart, so they can keep experimenting in style. 1:00 p.m., $20. Pop up maker space at 14th St. 1:00 PM, Sundays till 8/31, all materials provided. Guided Maker workshops challenge participants to design and construct projects inspired by science and nautical concepts. Come tinker and test solutions to real-world challenges. Subways A,C,E and ,L to 14th St. 14th Street Park at 10th Ave, 1-3 pm free.
Past the weekend: Fringe Festival for two weeks every August presents a feast of new and offbeat work with panel discussions, outdoor performances, gallery exhibitions, parties and even shows for young kids (FringeJR) and teens (FringeHIGH) at this year’s installment, which runs August 14 to 30. There are nearly 200 shows, fringenyc.org. Magic shows at http://www.nycgovparks.org/events/keyword%20clown/f2015-08-15/t2015-08-16.