Collection code: Leapfrog

Complemented by photographic historical back matter, a leveled-reader introduction to the life of Albert Einstein explains how his innovative thinking paved the way for many world-shaping discoveries and inventions.

All animals need to eat to live. Some animals eat other animals, and these predators must do some amazing things to hunt their prey!

Archie and George are twins. They look the same but they are very different. Archie and George have been chosen to sing at the school's Christmas show, but it's Archie's worst nightmare. Can George help his brother become a star of the show?

Dive into the weird and wonderful world of monstrous microbes to find out all about these pint-sized problems. From viral sneezes to mean diseases and everything in between get up close and personal with some of the tiniest terrors on the planet.

Batman fights to keep Gotham safe as the Penguin takes over the zoo, Mr. Freeze teams up with Captain Cold, and the Joker opens a school for clowns.

Bernie Bee feels like a failure. She's a bee but she can't fly. However, when her home and her friends are in danger, Bernie discovers that she has what truly counts - courage.

Subject: Harum Scarum is the biggest, baddest, hairiest, scariest wolf in the city. And he loves to frighten people! But when he loses his teddy, he doesn't seem so scary after all.

"It's the twins birthday. But where are their presents? They will need to solve the riddles to find them..." -- back cover.

When there is a power cut, Ajay and Dion are really disappointed. They were just in the middle of a game, and Dad can't even cook anything for dinner! But Dad has a few old camping tricks up his sleeve, and he has a plan ...

The night before Tim's birthday, an enormous cake appeared in his house. Tim had no idea where it came from, who bought it or how it got there - and he certainly didn't know why it was full of a family of Italian mice from New York with a score to settle.