The Wild Kratts use Aviva's Time Trampoline again, this time to visit the extinct Tasmanian Tiger.

The Wild Kratts use Aviva's Time Trampoline to jump back in time to meet an extinct bird.

The first series inspired by "Mister Rogers Neighborhood," "Daniel Tiger's Neighborhood" features 4-year-old Daniel Tiger, son of the original program's Daniel Striped Tiger. Every day Daniel puts on his red sweater, ties his shoes, and invites a new generation of preschoolers into the Neighborhood of Make-Believe. Daniel shares his daily adventures with pals O the Owl, Katerina Kittycat, Prince Wednesday and Miss Elaina. With the help of Daniel and his friends, preschoolers have fun and learn practical skills necessary for growing and developing.

After being warped into Cyberspace from a library computer, Matt leads friends Jackie and Inez as Cybersquad. With live hosts Bianca and Harry, the team must protect Motherboard from the evil Hacker who wants to rule Cyberspace. Using gadgets and following clues, the team solves math mysteries and any other problem that comes their way.

This animated series centers on house cat Fred, a dreamer of the great outdoors. Once his family leaves for the day, Fred becomes Nature Cat and with the help of his animal friends, he embarks on action-packed adventures that allow him to explore the natural world. The series is voiced by comic actors, including "Saturday Night Live" alums Taran Killam (Nature Cat), Kate McKinnon (Squeeks), Bobby Moynihan (Hal) and Kenan Thompson (Ronald). Kate Micucci rounds out the cast as Daisy.

The Fred Rogers Company introduces a new animated preschool series featuring Peg and her sidekick, Cat, as they encounter unexpected challenges that require arithmetic and problem-solving skills. Each episode features two stories in which Peg and Cat face a math word problem that they must solve. Children will learn how to build calculation skills and think about larger concepts that will help them form the foundation for learning math at any level, from kindergarten through calculus.

Bespectacled aardvark Arthur Read demonstrates to kids how to deal with such childhood traumas and challenges as homework, teachers and bullies. He also has to contend with his sisters, but loves playing with his friends: tomboy Francine, foodie and best pal Buster, supersmart Brain, rich girl Muffy and geography expert Sue Ellen.

Preschoolers get to hop on board the "Dinosaur Train" to learn about natural science, natural history and paleontology. Each half-hour episode of this series, produced in CGI-animated format by the Jim Henson Company, features Buddy, a preschool-aged Tyrannosaurus Rex, and his adoptive Pteranodon family traveling on a special train to meet all kinds of dinosaurs and explore the world inhabited by these amazing creatures. Also included are live-action segments hosted by paleontologist Scott Sampson.

Earth science and astronomy take center stage in this animated series from PBS Kids. Two neighborhood kids -- Sean and Sydney -- befriend the new kid on the block, Jet Propulsion, who just happens to be an alien from planet Bortron 7. Together they explore the solar system and how it affects the planet, while also learning about friendship and teamwork. The series features live-action interstitials with astronomer Dr. Amy Mainzer.