¿Verdad o mentira?

Se trata de una carpeta de anillas con 6 cuadernillos divididos por separadores. 1) Para empezar. 2) Unidades didácticas 1, 2 y 3. 3) Unidades didácticas 4, 5 y 6. 4) Unidades didácticas 7, 8 y 9. 5) Cuadernillo de evaluación. 6) Actividades complementarias.

Learn how technology has improved lighthouses over time with this book that features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.

What do a shark, a seahorse, and a ray have in common? They're all fish! Learn about the characteristics that all fish share.

In this Spanish title, learn causes of extinction and what problems extinction causes for animals, wildlife, and humans alike.