"Polar Bears Past Bedtime," Book 12 by Mary Pope Osborne

"It's icicle city ... when the Magic Tree House whisks Jack and Annie to the frozen Arctic. Luckily, a seal hunter on a dog sled lends them warm clothes. Unluckily, they get stuck on cracking ice. Will the giant polar bear save them? Or will Jack and Annie become frozen dinners?"

 

96 pages
Target Age: 7 to 9
Interest Level: Lower grades
Reading Level: 3.3