Arizona, el Estado del Gran Cañon

Practice finding patterns while learning about music around the world! Many different musical instruments use patterns to make different sounds into rhythms, such as tambourines, drums, and flutes. This charming, Spanish-translated text uses vibrant images, engaging practice questions, and helpful mathematical diagrams to help young readers understand patterns and early STEM themes. Children will have fun discovering patterns that these instruments make and learning how to make patterns of their own with homemade instruments! This 6-Pack includes six copies of this title and a lesson plan.

Introduces the life and times of Underground Railroad and anti-slavery leader Harriet Tubman and explains her place in American history.

Quizá los trilobites no sean tan espectaculares como los grandes dinosaurios. Sin embargo, estos pequeños seres prehistóricos –los cuales vivieron durante el periodo Cámbrico, es decir hace 542 millones de años–, tienen mucho que decirnos sobre el pasado remoto de la Tierra y sobre los seres vivos en general. Su fascinante anatomía, por ejemplo, guarda curiosas similitudes con otros animales y con un sinfín de objetos de uso común hoy en día. Este ameno libro toma a los trilobites como tema para hablarnos de la biología pero también de ingeniería. Los autores se refieren lo...

Black holes are neither holes nor black. They're invisible and packed with matter! Future astronomers will find out many more fascinating facts about these space phenomena with this intriguing book. Carefully crafted text encapsulates the most important information about black holes, such as how scientists locate them and their significance in a star's life cycle. Amazing photographs support critical concepts and inspire a true appreciation of the spectacles of space.