This book is dedicated to problems involving colored objects, and to results about the existence of certain exciting and unexpected properties that occur regardless of how these objects are colored. In mathematics, these results comprise the beautiful area known as Ramsey Theory. Wolfram’s Math World defines Ramsey Theory as "the mathematical study of combinatorial objects in which a certain degree of order must occur as the scale of the object becomes large." Ramsey Theory thus includes parts of many fields of mathematics, including combinatorics, geometry, and number theory.
As you eat a sandwich with cheese and drink a glass of milk, did you ever think that there are organisms that live in these foods? From the yeast that makes the bread dough rise to the mold that can spoil a loaf and the bacteria that makes yogurt healthy for our bodies to the fungi that helps make cheese, various organisms are integral to the foods we eat and drink every day. In Your Food shows how these microscopic critters eat the same foods we do, and what effects they can have on the fruits, veggies, and other foods in our diet.
From the top of your head to the tips of your toes, you probably think you know your body pretty well. But did you know that there are many different microorganisms that share your body? In Your Body explores how these tiny creatures function in your body.
Snail provides an accessible introduction to the physical characteristics, habits, and behavior of these slow-moving creatures. Full-color photographs add to the text by giving readers a close-up look at these shelled minibeasts. Reading Level: Grades 3-5
Many children have spent summer afternoons chasing beautifully colored butterflies around the garden. This book, filled with vibrant photographs, shows readers these graceful insects in sharp detail, from caterpillar to cocoon to winged insect.
