Zinc dust is a pure metal powder, which is grey in colour and is produced by condensation of purified zinc vapors. The particle shape is spherical. Zinc dust is suitable for use in many binder formulations for the manufacture of zinc primers and shop primers, for example inorganic ethyl silicate and epoxy primers.
Description: Shared Reading is an interactive reading experience that occurs when students. join in or share the reading of a big book or other enlarged text while guided and supported by a. teacher or other experienced reader. Students observe an expert reading the text with fluency. and expression.
A classroom observation is a formal or informal observation of teaching while it is taking place in a classroom or other learning environment.lassroom observations may be called learning walks, teacher observations, walkthroughs, and many other things, and they may be conducted for shorter or longer periods of timeâfrom a few minutes to a full class period or school day.