¿Cuántos Agujeros Tiene Un Anillo?

The US president is the face of the United States to the rest of the world. However, he or she doesn’t have unlimited power within the country. The president has certain powers given by the Constitution, including the ability to make treaties, appoint some important government officials, and veto laws. Readers learn the many duties of the president in simple, clear language appropriate for both younger readers and older readers looking for a succinct review of the topic. Fact boxes supplement the main content with important details about checks and balances, amendments, and more that affect...

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...

Maria Zef no llega a los 15 años, pero ya está acostumbrada a la dureza de la vida en el campo, un mundo de hombres frente al que chocará su espíritu soñador y libre. Tres mujeres en un camino de la Italia rural: una madre exhausta y enferma y sus dos hijas, niñas todavía. Maria Zef, la hija mayor, tira, como si fuera una bestia, de un carromato cargado de cacharros en venta al tiempo que vigila constantemente para que su madre siga en pie. Como cada año, han bajado de las montañas en las que viven antes de que la nieve las inmovilice allí durante meses de frío y pobreza. El viaje...

Simple text and illustrations introduce children to number concepts and teach them how to identify numbers.