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Catapults & Crossbows
$35.95
Detective Science
$19.95
Eco-Battery Vehicles Experiment Kit
$101.95
Electricity & Magnetism Experiment Kit
$86.95
Gears! Gears! Gears! Beginner's Building Set
$45.50 $40.95
Gears! Gears! Gears!® Dizzy Fun Land™ Motorized Gears Set
$67.95 $61.16