Interesting facts about some of the world's biggest things.

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Explains units of measurement, including speed, distance, length, volume, and time.

Who knew rulers could be so much fun? Little kids do, though they don't always have a firm grasp of how to use their rulers. Along comes How Big Is the Pig?, the perfect introduction to this preschool and early elementary school concept, which invites kids to measure the flocked images with a wooden ruler that is attached to the book by a colorful ribbon. Whether it's a happy pig dancing a jig, a crocodile who naps a while, or a tiny mouse inside her house, the rhyming text gently encourages kids to try their hands at measuring-and an answer key in the back of the book (plus tips on how to measure)--helps them see if they got it all right. The ruler comes housed inside a pocket sleeve that is clearly visible through a window in the cover, and uses both inches and metric units.

The perfect book to understand standing six feet apart! Follow the story about the King who wants to give the Queen something special for her birthday. The Queen has everything, everything except a bed. The trouble is that no one in the Kingdom knows the answer to a very important question: How Big is a Bed? because beds at the time had not yet been invented. The Queen's birthday is only a few days away. How can they figure out what size the bed should be? How can the people figure out how to measure? Readers will learn it's not that difficult and that everyone can learn to do it.

This book is about how big is the universe and how small are quarks, and what are the sizes of dozens of things between these two extremes. It describes the sizes of atoms and planets, quarks and galaxies, cells and sequoias. It is a romp through forty-five orders of magnitude from the smallest sub-nuclear particles we have measured, to the edge of the observed universe. It also looks at time, from the epic age of the cosmos to the fleeting lifetimes of ethereal particles. It is a narrative that trips its way from stellar magnitudes to the clocks on GPS satellites, from the nearly logarithmic scales of a piano keyboard through a system of numbers invented by Archimedes and on to the measurement of the size of an atom. Why do some things happen at certain scales? Why are cells a hundred thousandths of a meter across? Why are stars never smaller than about 100 million meters in diameter? Why are trees limited to about 120 meters in height? Why are planets spherical, but asteroids not? Often the size of an object is determined by something simple but quite unexpected. The size of a cell and a star depend in part on the ratio of surface area to volume. The divide between the size of a spherical planet and an irregular asteroid is the balance point between the gravitational forces and the chemical forces in nature. Most importantly, with a very few basic principles, it all makes sense. The world really is a most reasonable place.

Pipkin the penguin goes back in time to investigate how big the dinosaurs were, and meets dinosaurs of varying size.