Find your NATIONAL PI DAY GIFTS! Check out WHAT'S NEW!

Buying a gift certificate?Just choose between denominations of $25, $50, $100 or other dollar amount and we'll send a gift certificate packaged in a beautifully foiled enclosure with a catalog and gift card. Since we send them out First Class mail, there are no shipping charges to send gift certificates to USA addresses; we will manually deduct shipping fees when your order is processed.

Redeeming a paper gift certificate? Enter your credit card as usual and in the comment section of your order, enter the number on your paper gift certificate starting with the numbers "XXXXXXX" during the checkout process and we'll manually deduct the amount from your order when we process it.

Redeeming an emailed gift certificate? If the gift certificate was originally purchased online, enter the digital certificate number that starts with a "@" and the amount will automatically be deducted from your order.


$25.00 Gift Certificate
$25.00 Gift Certificate

Regular price: $25.00

$50.00 Gift Certificate
$50.00 Gift Certificate

Regular price: $50.00

$100.00 Gift Certificate
$100.00 Gift Certificate

Regular price: $100.00









Weekly Specials

Star Trek Original Crew T-shirt - Special Price - Sorry to see you go Spock!
Regular price: $39.99
Sale price: $24.99

Aspire Pi T-shirt - Pi Day Sale
Regular price: $19.99
Sale price: $9.99

Story of Math Science of Measurement DVD Set (1 each)
Regular price: $114.99
Sale price: $99.99

Sterling Silver DNA Double Helix Earrings Necklace Set
Regular price: $74.99
Sale price: $69.99

Get your FREE catalog!Click Here to Sign Up Today!