Na m e : ___ Date: _
Directions: Supporting details add information about the main idea of the paragraph. Read the
main idea and the sentences. Check (✔) the sentence if it is a supporting detail.Come on, now. Keep asking yourself: Does the
sentence tell something about the main idea?____ A. Large manufacturing firms opened at that time
and hired thousands of workers.
____ B. Eleven new states were added during that time.
____ C. Silver is a white metal.
____ D. Starting in 1870, more than 25 million
immigrants flowed into the United States.
____ E. Animals go through changes as they grow.
____ F. At the end of that time, the overall population
of the country had tripled.
____ G. Columbus sailed in 1492.
____ H. In the early 1900s automobile sales soared.Now write the letters of three sentences that do not contain supporting details and explain what
made you conclude that they do not._____ because _______________________________________________________________
____________________________________________________________________ because _______________________________________________________________
____________________________________________________________________ because _______________________________________________________________
_______________________________________________________________Main Idea:
I. From 1870 to 1916, the United States went through
a period of growth in many areas.