Statistically speaking, we're due for a dry weekend, and that would be an excellent thing, since we're counting on having a great time at the third annual Math Festival hosted by MoMath on Saturday. Laser cutting, giant mazes, music, and roller coaster design make STEM as exciting as sunshine after a long, soggy stretch.

Also this Saturday: Watch the colors fly at the Upper West Side's annual Kite Flying Festival. Bring a good kite and some string, or take advantage of the materials supplied on site (while supplies last). Down at Coney Island, enjoy the sunshine and artistry at the annual Sand Sculpting Contest, and learn some sand sculpting tricks of your own at Kaiser Park on Neptune Avenue, where the NYC Parks and Rec team awaits with a sand creature building program from 11am-12:30pm on Saturday.

Harlem Week romps through uptown all weekend long, with a children's festival on Saturday and Sunday. Daily performances run from hip hop to poetry to tap dance. And do visit our favorite new art installation, dusk.space, at the Seaport. It's magical to lie under the grid as the sun goes down and smell freshly mown grass, listen to crickets, and watch the "fireflies."

All this, plus over a hundred other events (50+ each day) are baked into the Mommy Poppins Calendar. Check out our list of the 50 best places to cool off this summer, and don't forget the fun-packed August Go List. And the outdoor movies that were canceled due to all the rain are now being scheduled through September—follow our August Movie page, updated frequently, to see what's playing (for free!) near you.