To help students learn the appropriate text structures, text features, and language of informative/explanatory writing, teachers might begin with Talk-alouds. Below you will see two 2nd grade examples that focuses on the use of diagrams. These are a paired set of a Reading Talk-aloud and a Writing Talk-aloud.
functional group. n. An atom or group of atoms, such as a carboxyl group, in an organic compound that defines the structure of a family of compounds and determines the properties of the family. functional group. n.
functional group definition, functional group meaning | English dictionary. Search also in: Web News Encyclopedia Images. functional group. n (Chem) the group of atoms in a compound, such as the hydroxyl group in an alcohol, that determines the chemical behaviour of the compound. English Collins Dictionary - English Definition & Thesaurus.