I created this common or proper noun color sorting worksheet for my 2nd graders to practice recognizing the difference between a common and proper noun. The common nouns are colored one color, while the proper nouns are colored another color. The proper nouns on this sheet are 2nd grader-appropriate words, such as days of the week, names, months, streets, countries, states, etc. This could be great practice for morning work, seatwork during reading rotations, homework, or even as an assessment. Also check out my common and proper nouns sorting center and other sorting worksheets. Enjoy!