Siglo XXII: El futuro del espacio (22nd Century: Future of Space)

Read Along or Enhanced eBook: Engineers have built some incredible things. But with every new feat, there is failure. Readers will learn about engineering feats and failures like the Titanic, the Hindenberg, the Hoover Dam, and more in this engaging, Spanish-translated nonfiction title. This book features brilliant images, charts, and intriguing facts in conjunction with informational text and mathematic skills to keep readers active and engaged.

Read Along or Enhanced eBook: Encourage readers to discover which foods are healthy for them and how to make the best food choices with this Spanish-translated nonfiction title. Featuring helpful charts and diagrams, interesting facts, informational text, and vibrant, detailed photos, readers are introduced to important concepts such as main food groups, proteins, carbohydrates, fiber, the recommended daily amounts, food allergies, and health concerns. With supportive and helpful language, readers are encouraged to make healthy eating choices to help keep them active, energetic, and strong.

Presents an overview of Egyptian pyramids and burial practices associated with them and introduces the pyramids of other countries.

Hace veinte años, la represión provocada por la dictadura argentina hizo "desaparecer" a 30.000 personas. Hoy se sigue buscando esa memoria a través de los vivos que no olvidan a los que perdieron entonces. La historia de Estela es una más. Tan real que está sucediendo ahora mismo en muchas partes.

Presenta varios experimentos en cronometría. Para estudiantes de primaria (grados 4-6) y de secundaria (grados 7-9).

SHAAAARRRKK! That's probably the last word anyone wants to hear while swimming in the warm blue sea. But most sharks aren't at all what people expect. In fact, those who think all sharks are giant, man-eating killers are in for a surprise. The compelling narrative, colorful illustrations, and captivating facts in SURPRISING SHARKS reveal that sharks come in all shapes and sizes - and probably should be more afraid of humans than we are of them. Back matter includes a note about sharks and an index.