Brothers Charlie and Mouse enjoy a special visit from Grumpy.

Ellie's scientist grandfather has discovered a way to reverse aging, and consequently has turned into a teenager--which makes for complicated relationships when he moves in with Ellie and her mother, his daughter.

Merci Suárez begins the sixth grade and knows things will change, but she did not count on her grandfather acting strangely, not fitting in at her private school, and dealing with Edna Santos' jealousy.

After her mother dies in 1975, ten-year-old Lemonade must live with her grandfather in a small town famous for Bigfoot sightings and soon becomes friends with Tobin, a quirky Bigfoot investigator.

Little Bear thinks he knows the best way to catch a fish and the best way to dig a hole. But when Grandpa Bear shows him a few tricks, Little Bear realizes that sometimes the simple way is best.

With the help of his grandfather, underachieving fifth-grader Hank Zipzer finally discovers that he is good at ping-pong, but he is afraid to tell his classmates for fear of being ridiculed.

Born into a family of over-achievers, fifth-grader Allie Velasco has never finished first in anything, and lately things have been going badly: her science project is ruined by a well-meaning student, her former best friend is hanging out with another girl--but now she is determined to win the Trailblazer contest with a photographic presentation about her great grandfather, the first Congressional Medal of Honor winner from their town.

"Little Bears grandpa is wonderful! He can build forts and make campfires, and he gives the best bear hugs. And no matter what, he's always there for Little Bear"--

A little boy provides instructions for properly "babysitting" a grandfather, such as offering him tasty treats and entertaining him with special games.

Grandude brightens a dreary weekend for his visiting grandchildren, Lucy, Tom, Em, and Bob, by using his magic compass and postcards to take them on adventures around the world.