Product Description: School can be very different from place to place. Find out about the similarities and differences in schools around the world!

When someone begins sending threats to a doctor at a Colorado health spa, Longarm is sent by the U.S. Justice Department to protect the doctor and to keep one guest--a senator's son--out of trouble

In many biological models it is necessary to allow the rates of change of the variables to depend on the past history, rather than only the current values, of the variables. The models may require discrete lags, with the use of delay-differential equations, or distributed lags, with the use of integro-differential equations. In these lecture notes I discuss the reasons for including lags, especially distributed lags, in biological models. These reasons may be inherent in the system studied, or may be the result of simplifying assumptions made in the model used. I examine some of the techniques available for studying the solution of the equations. A large proportion of the material presented relates to a special method that can be applied to a particular class of distributed lags. This method uses an extended set of ordinary differential equations. I examine the local stability of equilibrium points, and the existence and frequency of periodic solutions. I discuss the qualitative effects of lags, and how these differ according to the choice of discrete or distributed lag. The models studied are drawn from the population dynamiCS of single species (logistic growth, the chemostat) and of interacting pairs of species (predation, mutualism), from cell population dynamiCS (haemopoiesis) and from biochemical kinetics (the Goodwin oscillator). The last chapter is devoted to a population model employing difference equations. All these models include non-linear terms.

Product Description: Introduces schools across the globe and what students do there, including a tiny school in Scotland, Japanese children in an earthquake drill, and a tent school for Syrian refugees, and discusses children who cannot go to school.

Product Description: Teach kids to count and read at the same time! Know Your Numbers: School introduces early readers to numbers by paring them with simple sentences about school. Beautiful photos and graphics tie the written, numeral, and visual forms of each number together...read more

Product Description: This book looks at the rich diversity of schools around the world. Through simple text and stunning photographs, it introduces children to similarities found in schools in different cultures, and honors differences.

Scissors are commonly found on school supplies lists, but most students don't recognize them for the simple machines they are. This exploration of school buildings and grounds encourages critical thinking to uncover the simple machines that are often taken for granted and teaches basic physical science concepts in a fun way.

Product Description: School has never been so exciting! Kid-friendly photographs and comprehensive diagrams teach young readers various signs for objects around the classroom.

Product Description: It's important to know how to get around school! In this library bound book, early readers learn the basics of mapping out school--from where it is located in the neighborhood to the position of items in the classroom. Children are encouraged to map out their own classroom with helpful ideas for a creative and engaging activity...read more

Product Description: Young readers will learn about the people and places that make up a community in the all-new My Neighborhood series. Each book features easy-to-red text based on sight words, paired with vivid photos to stimulate and engage even the most reluctant readers...read more