Century-old publisher McGraw Hill has a lot of experience bringing technology to education—a playbook it’s turning to for ...

A preposition is a word that tells you where or when something is in relation to something else. Examples of prepositions include words like 'after', 'before', 'on', 'under', 'inside' and 'outside'.

Age-standardised mortality rates allow for differences in the age structure of populations and therefore allow valid comparisons to be made between geographic areas, between the sexes, and over time.