Do you need an engaging activity to go along with your unit on Fish? Students will look at the characteristics of the three classes of fish. There are 16 task cards. Students will select a question from a drop-down menu and then type the correct answer in the space provided. The task cards are SELF-GRADING. The task cards are available in PDF and Google Sheets formats. The PDF version can be printed and laminated for future use. Answer key included.