Some good passages for third grade students can be fiction, non-fiction and poetry with titles such as "Thomas Edison," "Outer Space," The Butterfly" and "Jackson's Day," as noted by North Carolina State University. These reading passages also come with a set of questions that can be on reading comprehension, main ideas and definitions of vocabulary words. Additionally, many reading passages for this grade level are available as reading comprehension worksheets, which are found at sites that include K5 Learning and Super Teacher Worksheets.
The North Carolina State University website has over 10 reading passages that are appropriate for this grade level. The passages are on different topics, including a short biography on Thomas Edison, poems and non-fiction works about space, hurricanes and sharks.
The K5 Learning website also offers various reading comprehension worksheets for different reading passages, including "The Sun and the Stars" and "The History of Chocolate." These are leveled reading passages, which are based on the Fountas & Pinnell grading system and range in difficulty from A through Z, as noted by the K5 Learning site. There are fiction, non-fiction and historical worksheets that have passages with word counts of up to 600 words. Each worksheet has questions on the passage.
Super Teacher Worksheets provides third grade reading comprehension worksheets for passages, such as "Closet Creature," "Raccoon Rex" and "Magician of the Sea." These reading activities have Common Core standards associated with them, and they can be accessed by clicking on the CC symbol, as noted by the Super Teacher Worksheets website.