Playground Engineering & Design Building Set 10 Inch The exposure must be of

The exposure must be of 30 minutes in order to make the balloon glowcontinuously under black light

and Blue Fairy Light LEDs

Develops early math concepts

The badge glows in a bright neon color and the sticker is open for customization

Playground Engineering & Design Building Set 10 Inch The exposure must be ofHelp young learners develop early STEM skills with this Playground Engineering and Design Building Set. Students can design and build their own mini playground, complete with a swing set, seesaw, slide and more. This set includes challenge cards with building instructions and real world connections that follow the engineering design process. Plastic. (104 pcs. per set) 13 3 4" x 10" x 3"