Pleskit and Tim face off against the class pets in this tenth book in the hilarious, fast-paced, and accessible sci-fi series Sixth-Grade Alien from the bestselling author of Aliens Ate My Homework, Bruce Coville. When the hamsters in Ms. Weintraub’s room start acting strangely, everyone thinks the problem must be the alien vitamins that Pleskit has been feeding them. But even after Pleskit stops the vitamin treatments, the hamsters continue to grow bigger and stronger and crankier. Clearly, something else is at work. To find out what, Tim and Pleskit must solve a mystery, track down an enemy, and defend themselves against a trio of the most dangerous hamsters the world has ever seen!

Presents librarians and teachers with information on more than 1,200 fiction series for children in kindergarten through sixth grade, providing annotations, a listing of titles, important characters, genre, author biography, grade level, and major themes.

Trade, Travel, and Exploration: An Encyclopedia is a reference book that covers the peoples, places, technologies, and intellectual concepts that contributed to trade, travel and exploration during the Middle Ages, from the years A.D. 525 to 1492.

Every 3rd issue is a quarterly cumulation.