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.
: carbon is the principle element. A functional group is any atom, group of atoms or organization of bonds that determines specific properties of an organic molecule. The functional group generally is the most reactive part of a molecule and gives the molecule predictable characteristics. carbon is the principle element. A functional group is any atom, group of atoms or organization of bonds that determines specific properties of an organic molecule. The functional group generally is the most reactive part of a molecule and gives the molecule predictable characteristics.