This weekend: Beware of jelly fish.
Hear
Jazz-a-ma-tazz featuring Hayes Greenfield
Enjoy a fun, interactive jazz show for kids.
When: Thurs. 8/7, 10:30am; All ages; Free.
Where: Oval Lawn, Madison Square Park, 212-538-6667.
Go
The Yard
Kids get the VIP treatment (free popsicles) at this Carroll Gardens waterfront BBQ dance party. The weekly series features international DJs and local talent.
When: Every Sunday in August, 3-9pm; All ages; $8 Adults, Kids Free.
Where: 388-400 Carroll St., Brooklyn, theyard.ws.
Do
International Yo-Yo Open
See stunning yo-yo tricks at this annual competition and festival.
When: Sat. 8/9, 11am-5pm; All ages; Free.
Where: Pier 17 (Fulton St. at South St.), yoyoopen.com.
Shop
Bump Brooklyn
Save up to 80 percent on styles from Schone Maternity. Meet the designers today and tomorrow, 11am to 1pm.
When: Thurs.-Sun., 8/7-8/10. Thurs.-Sat. 11am-7pm, Sun. 12-6pm.
Where: 464 Bergen St., Brooklyn, 718-638-1960, bumpbrooklyn.com.