La optimización mecánica en el medio acuático

This workbook provides students with extra practice as they explore the five themes from the new IB Diploma Language ab initio guide (first examination 2020): identities, experiences, human ingenuity, social organisation and sharing the planet. It helps students further develop their Spanish language skills with additional exercises that complement the activities in the coursebook, with a focus on grammar and vocabulary. The workbook is ideal for teachers needing differentiated exercises for their class and can be used for independent study and revision. Answers to the workbook activities are ...

Colección de 26 cuadernos independientes de los cuatro cursos de Secundaria. Para trabajar y consolidar todos los contenidos de la ESO de acuerdo a las necesidades de cada alumno.

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

Describes which animals are loud and which are quiet, including such creatures as cicadas, whales, mice, and fish.