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This educational kit is loaded with more than 300 projects to build. For example, kids can learn how transistors and capacitors function, and how to make time-delay circuits. In addition, this version includes circuits showing how oscillators and photo sensors work. Projects involve an AM Radio, Burglar Alarm, Radio Announcer and more. Contains over 60 parts. Requires 4 "AA" batteries, not included.

Curious young minds can learn the basics of electronics as they build more than 100 exciting projects with this kit. Work on projects that make sound effects, engineer different types of alarms, build touch circuits and play games. Contains over 30 parts in all. No soldering is required -- pieces snap together. Requires 2 "AA" batteries, not included. Box measures 10" x 15" x 2".

Witness one of nature's most spectacular transformations up close with this reusable, collapsible habitat. Fine, transparent mesh lets you see butterfly metamorphosis up close. Product includes easy-to-use feeder and complete instructions for habitat. Butterfly larvae with food shipped directly to your home. The habitat collapses for storage when not in use. You can adopt and raise a handful of caterpillars, watch them transform into painted lady butterflies, then lift the garden cover to release your beautiful specimens into the wild. This exciting habitat makes a fabulous introduction to the miracles of nature. The larvae and food available round the year.

<p>Mind blowing experiments to delight and educate young scientists! Erupt a color changing volcano.  Mix up magic ooze with a mind of its own.  Play with sand that never gets wet.  Mix safe chemicals and watch colors change before your eyes. You'll amaze yourself and your friends as you explore the science behind these truly remarkable reactions.

<p>Grow your own friendly germs and fuzzy molds. Mix up a batch of coagulating fake blood. Even make a stinky intestine. learn the science behind unmentionable bodily functions while doing some truly NASTY Experiments.  Ages 8+

THOMAS TrackMaster - Spin & Fix Thomas Set Make your Thomas & Friends TrackMaster world bigger! When Thomas's trucks prove to be too heavy, his brakes fail and he soars into a forgotten siding. There, Thomas discovers Hiro, one of the oldest engines on the Island of Sodor. But before Thomas can help his new friend, he needs to repair his brakes at the Sodor Steamworks - the newest and bigger repair yard on the island! Guide Thomas into the lift and use the claw to pick him up and move him to the repair area. Use the spinner to turn Thomas and make your repairs. A light-up tool with real welding sound effects helps to get the job done! It's easy to put a favorite story in motion with Trackmaster playsets and accessories. Includes: Track pieces Motorized Thomas Thomas requires 1 X AA battery (not included) Welding tool requires 3 X button cell batteries (demo batteries included) Ages 3+ NOTE: Not for use with some Trackmaster engines ONLY compatible with other Thomas & Friends TrackMaster vehicles & playsets.

Includes a sleeve of 20 sterile emptry petri dishes. Contains two bottles od nutrigent agar enough to do 20 dishes. Microwave until melted (aprox. 2 - 5 minutes), then pour into sterile petri dishes. Each Bottle makes 9 to 10 petri dish plates.Includes 20 sterile swabs

10X & 20X BUTTERFLY DOUBLE LOUPE! These loupes have acceptional magnification power Great for inspecting gems, stamps, diamonds and more! Comes with protective case These are some of the best loupes anywhere!

That is no log floating at the edge of the water! With textured "skin" and glowing eyes don't turn your back on this guy. Powerful four wheel drive, moves him over the water, then even faster on land!These high-performance radio control amphibious creatures can go anywhere- dirt, pond or pool. Features sturdy 4x4 turf digging tires for land and wake forming paddle wheel treads for ripping through the water. Powerful full-function controller makes explorations on any surface just a touch away. Requires 2 "AAA" and 3 "AA" batteries, not included. As with all water related activities, use with close adult supervision.