Mack Monster Truck Marker Also included is a specially

Also included is a specially designed spring scale so that you can measure how the machines change the direction and magnitude of forces

Observe your glowing creations under a UV flashlight (a blacklight)

Color Counts coloring books incorporate a universal numbering system that pairs perfectly with our brilliantly-hued

Unlock boundless creativity with art projects like Marbled Paper or Monster Bugs

Mack Monster Truck Marker Also included is a speciallyPush down the engine block to open Macks enormous mouth revealing his set of scary monster teeth coming to get you! Flip up his roof and place his driver into his driver seat and wait for it ReadySteadyGo! Push & Go motorized Monster Truck Realistic engine sounds Push down engine opens monster mouth revealing large monster teeth Over sized super grip rubber tires Removable driver Play Friend figure Includes: 1 motorized Push & Go monster truck with