> Resources > Polar Bears Past Bedtime Educators’ Guide Polar Bears Past Bedtime Magic Tree House Download this educators’ guide for Magic Tree House Polar Bears Past Bedtime. Download Guide Related Books Ages 7-10 years Polar Bears and the Arctic Mary Pope Osborne and Natalie Pope Boyce; illustrated by Sal Murdocca Ages 6-9 years Polar Bears Past Bedtime Mary Pope Osborne; illustrated by Sal Murdocca