NO PURCHASE NECESSARY. 50 US, DC, and US territories. Entries must be submitted by the student’s teacher, 18+. Teachers submit entries online: scholastic.com/hardestmathcontest. Teachers submit entries by mail: Scholastic Inc., SNP—The Hardest Math Contest, 557 Broadway, New York, NY 10012. Challenge 1: Open to grs. 6-8 students. Entry period: 12:01 a.m. ET on 10/8/18 and 11:59 p.m. ET on 11/28/18. Mailed entries: postmarked by 11/28/18, and rec’d by 12/10/18. Three teachers who submit at least three eligible student entries (except as set forth in official rules) will each receive a $500 gift card. Challenge 2: Open to grs. 6-8 students who submitted a current answer to Challenge 1. Entry period: 12:01 a.m. ET on 1/4/19 and 11:59 p.m. ET on 3/1/19. Mailed entries: postmarked by 3/1/19, and rec’d by 3/15/19. Three (3) Grand Prize winning students, one from each of sixth, seventh, and eighth grades, will each receive a laptop computer with Microsoft Office Home and Student Office products (ARV $550) and a $5,000 contribution to a 529 plan (a college savings account) (ARV $5,000). The three teachers who submitted the entries of the Grand-Prize Winners will each receive a $500 American Express gift card for classroom use (ARV $500). Three (3) Runner-Up winning students, one from each of sixth, seventh, and eighth grades, will each receive a tablet computer, which does not include a data plan (ARV $125). Official Rules: scholastic.com/hardestmathcontest/rules. Void where prohibited.