Draw an airport runway with Crayola 3-D Sidewalk Chalk on a safe outdoor surface. To create the best 3-D effects, leave a small line of empty area between each chalk color. Place cool colors such as blue, purple, and green near warm colors such as red, yellow, and orange for maximum 3-D depth. Try on the glasses as you draw to see the effects you’re creating.

Mark playing lines a short distance away from the targets for test pilots to stand behind. Mark a close line for younger pilots and another line a bit farther away for older pilots.

Using your foot as a measuring tool, mark the edge of the runway like a giant ruler. Number the marks, with the smallest number at the starting line.

Add colorful chalk drawings of "hazards" such as puddles, birds, and rocks on the runway. If your test plane lands in a hazard area, that flight doesn’t count.

Fold several paper airplanes. Decorate them with markers.

Take turns launching your airplanes down the runway. See which airplane flies the farthest without landing in a hazard or going off the runway! To keep score, use the number next to the mark closest to where the plane lands for each trial. Add them togeth

Other ideas: 1. Try taking an additional step backwards before tossing the airplane each round to make the contest more challenging. 2. Have everyone take turns flying the same paper airplane. Which take-off techniques work best?