Botellas perdidas en el mar

Explains, in simple terms, the reasons for skin color, how it is determined by heredity, and how various environmental factors affect it.

Take a fascinating trip into the depths of Carlsbad Caverns and learn arithmetic patterns along the way. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn arithmetic patterns while engaged in reading about the various patterns that can be found in the miles of caves in Carlsbad Caverns National Park. The full-color images, math graphs and charts, and practice problems make learning math and language arts concepts easy and fun. The table of contents, glossary, and...

Intermediate Readers Learn About The Relationship Between The Earth, Sun, And Moon In Greater Detail.

Sing Along With Dr. Jean And Dr. Holly To Learn About Things Your Teacher Will Share With You At The Beginning Of School.