My Account Details
PreK–12 educators will see school pricing in their cart after logging in.
Arny, Explorations: An Introduction to Astronomy, 2020, 9e, Online Student Edition, 3-year subscription
National Edition
MHID: 1265939454 | ISBN 13: 9781265939458
Grades: 9 - 12
© 2020
Payment Options: During checkout, you can pay with a P.O. (simply enter the number), Credit Card, or PayPal.
Social Studies
View all Social Studies Programs
IMPACT (K–5)
Actively Learn (3–12)
New Social Studies (6–12)
Networks (6–12)