Does that sound right to you all?
Is there any reason to teach scientific notation earlier (or later)?
(I don't have an opinion -- I'm asking.)
Perform operations with numbers expressed in scientific notation,including problems where both decimal and scientific notation are used. Use scientific notation and choose units of appropriate size for measurements of very large or very small quantities (e.g., use millimeters per year for seafloor spreading). Interpret scientific notation that has been generated by technology.
Common Core State Standards for Mathematics