Perfect book for busy teachers - clear and very easy to use while teaching multi-level groups. Especially the first two pages of each unit are an invaluable resource, enabling teacher to introduce key business vocabulary in a very organised way.
N-heterocyclic carbenes (NHCs) have found increasing use as reagents for a range of organic transformations and in asymmetric organocatalysis. The performance of these molecules can be improved and tuned by functionalisation. Functionalised carbenes can anchor free carbenes to the metal site, introduce hemilability, provide a means to immobilise transition metal carbene catalysts, introduce chirality, provide a chelate ligand or bridge two metal centres.
This book offers a concrete and accessible treatment of Euclidean, projective and hyperbolic geometry, with more stress on topological aspects than is found in most textbooks. The author's purpose is to introduce students to geometry on the basis of elementary concepts in linear algebra, group theory, and metric spaces, and to deepen their understanding of these topics in the process. A large number of exercises and problems is included, some of which introduce new topics.
The story-based approach presents new language through imaginative stories and those which reflect the world of the child. The materials focus on listening and speaking and introduce reading and writing only in the second level.
