110 pieces, 28 shapes. 49 lbs. Guidecraft smooth unit blocks are made to resist dents and dings. The blocks are finely sanded and rounded to eliminate any sharp edges, and are splinter-free to protect tender young hands. All our blocks are guaranteed for life.

No one who saw the dreaded Death Star in the classic Star Wars films could ever forget it! Now you can build your own to add to your LEGO Star Wars collection. This incredibly detailed and faithful replica of the Death Star II from Star Wars: Episode VI Return of the Jedi will make an impressive addition to any Star Wars collection. The partially constructed Death Star looms in space above the forest moon of Endor, super laser ready to fire. This unique collectible is sure to rank as one of the greatest LEGO Star Wars models ever produced. Includes 3,449 pieces in all. Includes: Display stand and Imperial Star Destroyer to scale Measures 25"H x 19"W, including stand Imperial super laser II, laser cannons, ion cannons, tractor beam replacements, Quadanium steel hull and numerous deflector generators

Mindstorms NXT combines the power of the LEGO building system, an intelligent brick and easy-to-use drag-and-drop programming software to create advanced robots. Create and build the smartest, most advanced LEGO robot yet, in as few as 30 minutes. The new NXT Intelligent Brick, your robot's "brain," features a powerful 32-bit microprocessor and more memory, plus support for USB 2.0, Bluetooth and more. This intuitive robot features a highly versatile palette of LEGO TECHNIC elements, state-of-the-art ultrasonic, sound, light and touch sensors. It includes a Quick-Start guide, easy-to-use software and detailed building instructions, so beginners and experts alike can create humanoid, vehicle and animal robots that obey your every command. Improved light sensors can detect different colors and intensities, while new sound sensors enable robots to respond to sound patterns and tones. Ultrasonic "eyes" measure distance and movement, while improved touch sensors allow the robots to really "feel." Programming software is available for both PC and Macintosh, plus with Bluetooth support, you can even command your robot from your mobile phone. LEGO Mindstorms NXT includes: All-new NXT Intelligent Brick with 32-bit microprocessor, more memory and FLASH Three Interactive Servo motors feature built-in rotation sensors to align speed for precise control New sound sensor reacts to sound commands, patterns and tones New ultrasonic visual sensor responds to movement Improved touch sensor reacts to touch and release Improved light sensor detects different colors and light intensities 519 specially selected LEGO TECHNIC elements for sturdy and durable building and improved functionality and movement Four input ports, three output ports and seven 6-wire cords Matrix display Real Sound Speakers USB 2.0 and Bluetooth support Easy-to-use PC and Mac compatible interface Intuitive, icon-based drag-and-drop program "building environment" Requires 6 "AA" batteries (not included) System

K'Nex kits inspire young minds and satisfy kids' curiosity on how to build simple creations. Each innovative kit keeps young builders busy and intrigued for hours on end. This K'Nex Kit builds 11 models and allows 6-8 kids to work as a team. Models demonstrate math and physical science concepts related to roller coasters. Written to meet State and National Education Standards for Grades 10-12; curriculum included. Comes with three large compartmentalized storage cases with snap-on lids.

K'Nex kits inspire young minds and satisfy kids' curiosity on how to build simple creations. Each innovative kit keeps young builders busy and intrigued for hours on end. This K'Nex Kit builds 13 models and allows 6-8 kids to work as a team. Models demonstrate math, technology and physical science concepts related to amusement park rides. Written to meet State and National Education Standards for Grades 6-9; curriculum included. Comes with three large compartmentalized storage cases with snap-on lids.

K'Nex kits inspire young minds and satisfy kids' curiosity on how to build simple creations. Each innovative kit keeps young builders busy and intrigued for hours on end. This K'Nex Kit builds seven models and allows 7-14 kids to work as a team. Includes two solar panels, two capacitors for storing energy and four solar motors. Written to meet State and National Education Standards for Grades 6-9; curriculum included. Comes with large compartmentalized storage case with snap-on lid.

Become the architect of a world famous structure! Build your own Eiffel Tower in 1:300 scale. Based on the original blueprints for the tower, it can be created in three different sections making assembly a cinch. Includes 3,248 pieces. Sturdy model measures 20" x 20" x 42.5".

Build the ultimate outdoor racer! This mean, green, remote-controlled machine is the definition of tough! With bold details, extra wide tires, massive chassis, and a top speed of 12 mph, this Racer is ready for anything - water, mud, dirt, grass, you name it! Use the tip tronic speed shift to change channels and tackle the toughest terrain. Build it, race it, and win. Includes batteries, charger and remote control. 104 pieces.

16 piece set constructed using baltic birch and northern hardwoods. Edges are rounded and surfaces are sanded smooth for safety and hors of creative play. Blacks are sealed and finished inside and out. 54 lbs. set. Guidecraft smooth unit blocks are made to resist dents and dings. You and acute;ll notice the finely sanded and rounded to eliminate any sharp edges, and are splinter-free to protect tender young hands. All our blocks are guaranteed for life.

K'Nex kits inspire young minds and satisfy kids' curiosity on how to build simple creations. Each innovative kit keeps young builders busy and intrigued for hours on end. This K'Nex Kit builds seven models and allows 8-12 kids to work as a team. Models demonstrate arch, bam, bascule, cable-stayed, cantilever, truss and suspension bridges, all replicas of real-world bridges. Written to meet State and National Education Standards for Grades 5-8; curriculum included. Includes two large compartmentalized storage cases with snap-on lids.

Kick your imagination into high gear! The Jumbo Station Set comes with more than 200 gears and gives you the perfect play and storage area for all your Learning Resources gears. The top work area features a sturdy surface that's big enough for several children to use at the same time. Six handy plastic bins sort and store all your gear pieces. Set includes 216 gears and connectors total. Plastic storage unit measures 30"x 27"x 13". Gears are included in this set, even though product packaging does not say so.

Dedicated to collectors of all ages, this exquisite 350-piece Geomag edition sits in a walnut finished wooden box with a brushed steel closure. By working with the magnetic bars and steel spheres you can create beautiful and complex models. Includes 250 metallic blue rods and 100 chrome spheres. 350 pieces.