La cruz ausente

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

In this book, a colorful illustrated character bundles up to battle the cold weather before shoveling the fresh snow. With easy-to-read text, early readers will watch snow become a snowman with the help of some hard work and a big hat!

Esta obra explica las principales habilidades matemáticas que permiten plantear y resolver situaciones matemáticamente. En ella se ha dado mucha importancia a la representación de las ideas matemáticas (dibujos, gráficas, tablas, esquemas...) porque ayuda a comprender y a resolver todo tipo de situaciones. Los temas tienen un carácter transversal, de modo que los aprendizajes puedan aplicarse a muchas situaciones diferentes. No obstante, están agrupados según los bloques curriculares habituales. Se ofrecen muchos ejemplos de aplicación de las matemáticas y se describen herramientas...

Aprenda los nombres de los animales en el zoológico y también practique los números. (Learn the names of the zoo animals and practice counting, too!) Children love to visit the zoo to see all of the animals. Now children can walk through the zoo and count from one to ten with lions, monkeys, elephants, kangaroos and more! Young readers will recognize word patterns and find it easy to read along to this vibrantly-illustrated book. And, aspiring mathematicians will count from one to ten and start to recognize number words, too! Learn simple English words and phrases with the corresponding...