The Fry word list or "instant words" are widely accepted to contain the most used words in reading and writing. The list is divided into ten levels and then divided into groups of twenty-five words, based on frequency of use and difficulty.
It is important for young readers to instantly recognize these words by sight in order to build up their reading fluency. It is also important for readers to practice words in meaningful context through phrase and sentence reading practice. As a follow up activity, students can practice writing short sentences including Fry words.
Sight Word Activities: https://www.turtlediary.com/
Sight Word Activities: abcya.com/dolch_sight_word_spelling.htm
See attachments below.