This really works! We tracked cars (we don’t recommend this to kids—but we couldn’t help ourselves), baseball pitches, and bicycles going by. Fun for outdoor play. (800) 542-8697. Our testers also tried the Discovery Speed Detector ($39.95 ) and gave it strong reviews as well. In a head-to-head competition, the Mattel gun is more sensitive and responds better than the Discovery version, which takes more finesse to work. That said, both did well with our kid testers. Both 8 & up. These toys have been discontinued.

Age: Later School Years. Award Year: 2007.