You have exceeded your limit for simultaneous device logins.
Your current subscription allows you to be actively logged in on up to three (3) devices simultaneously. Click on continue below to log out of other sessions and log in on this device.
Gr 3–6—While interviewing for an elite private school, Denny solves an equation that opens a portal to a fantasy world where math is used to manipulate reality and is the key weapon between haughty, conquering elves and a mixed band of rebellious underclasses...