Get your gifts shipped before the holidays! Domestic orders placed before December 14th using UPS Ground or December 16th with USPS Priority Mail to have your order delivered by December 24th.

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A blue scarf with light blue trees and branches printed all over the fabric.

Trees & Branches Scarf

$ 50.00
$ 50.00
Child is assembling an orange step piece on top of stacked pieces of the Trestle Tracks set.

Trestle Tracks 73 Piece Builder Set

$ 34.99
$ 34.99
Fossilized trilobite on a stone base against a white background

Trilobite Drotops

$ 297.00
$ 297.00
Collection of blue-green stones on a white background

Tumbled Amazonite (Set of 3)

$ 6.00
$ 6.00
Group of polished red stones on a white background

Tumbled Red Banded Jasper (Set of 3)

$ 3.75
$ 3.75
Pink tumbled stones on a white background

Tumbled Rose Quartz (Set of 3)

$ 3.75
$ 3.75
A white box with cut out letters and squares that show a green paper underneath.

Turing Machine

$ 44.00
$ 44.00
A jagged, brown fossil on a white background.

Turtle Coprolite Fossil

$ 18.00
$ 18.00
A red and tan front cover depicting desert landscape. In the center there is a teal circle with a feather in a branch.

Tweet! Slide and See Book

$ 19.99
$ 19.99
A constructed wooden robot with six legs.

UGears Hexapod Explorer

$ 55.00
$ 55.00
An extraordinarily detailed and precise Hurdy Gurdy complete with strings and cranking mechanism made entirely out of wood.

UGears Hurdy-Gurdy

$ 84.99
$ 84.99
A black box with chemistry equipment in a green tray,

Ultimate Chemistry Set

$ 50.00
$ 50.00
A purple cover depicting a man looking at a holograph of the earth.

Understanding Global Warming with Max Axiom

$ 7.95
$ 7.95
Front cover features five illustrated women standing on a grass hill. The title of the book is on the top and is written in both english and spanish.

Valientes Creadoras de la Historia, 11 Mujeres de Latino America Que Cambian El Mundo / Courageous History Makers: 11 Women from Latin America who Changed the World

$ 18.99
$ 18.99
Box and constructed robotic arm made of blue, orange, and grey pieces.

VEX Robotic Motorized Arm

$ 50.00
$ 50.00
The book's softcover surface contains swirling lines of blue, white, gold, and red that create a swirling optical illusion. The trim is black; the text is white and gold.

Viendo: 30 Descubrimientos Visuales Interactivos

$ 14.95
$ 14.95
Colorful illustration of various gemstones on a black background

Vintage Gemstones and Crystals Print

$ 17.00
$ 17.00
Cream colored canvas pouch with images of various wildflower specimens printed on the front. A brown cord pull is attached to the dark grey metal zipper.

Vintage Wildflowers Pouch

$ 15.00
$ 15.00
Red robot-shaped circuit with yellow lights on a white background

Wacky Robot Capacitron: DIY Mini Robot

$ 25.99
$ 25.99
Black robot-like figure with colorful lights on a white background

Wacky Robot Robby: DIY Mini Robot

$ 25.99
$ 25.99
Packaging of Wandini Magic LED Levitation Wand with colorful design and text.

Wandini Glow.0

$ 34.99
$ 34.99
"Watching Weather" is a paperback book with a blue cover with clouds and a weathervane,

Watching Weather: Discover the Unexpected Science and Lore of Sun, Storms and Seasons by Mary Miller, Tom Murphree and the Exploratorium

$ 12.95
$ 12.95
A young girl is sitting at a table examing the two plants that she has grown in the water in the blue and purple water flasks.

Way to Grow Hydroponics Kit & Gardening Diary

$ 20.00
$ 20.00
A colorful book cover. A brain and a robot head are pictured among abstract shapes and forms.

Welcome to AI

$ 22.99
$ 22.99