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.
Explain what is meant by a functional group, & tell what effect they have on the molecules they are attached to. Part of the monomer that bond with another monomer. All function groups have certain properties that let them bond to other molecules in specifies ways. They impart chemical properties to their monomers. For example, when a monomer contains a certain function groups, that monomer then retains the bonding properties of the functional group.