Separated from his science team on a mountain after a landslide, Joe is in no hurry to get back. The slide has carried a wealth of fossils with it for him to study! Joe examines these and the mountain terrain to learn how the mountains formed and figure out how old they are.
The alien robots are back! Googol and Googolplex are back from space, ready to continue their scavenger hunt. Pippa and Troy are eager to help, but runaway bulls and disappearing rainbows make their task difficult. And dangerous!
Googol and Googolplex have come back to earth to continue their scavenger hunt. Tutus, sand dollars and peacock feathers are on their list. Luckily Troy and Pippa are ready to help, and the ocean is nearby, but so is Martin Kelly, the boy next door, who will ruin everything if he gets a chance.
The M109A6 Paladin is a large, mobile howitzer. It can fire rounds several miles to support ground forces. Readers will learn about the features that make the Paladin successful, how it performs on the battlefield, and common Paladin missions.
Roller coasters offer riders high speeds and thrilling drops! The fastest roller coasters can reach speeds over 100 miles per hour! Eager students will plunge into learning about how roller coasters offer fast, sky-high thrills.
On a very hot day at the beach, Tim "sails" off to the North Pole to get his grandpa an iceberg. But when Tim arrives back at the beach the surprise is not what he expected it to be!