Are you looking to spice up your students' practice of counting significant figures? Look no further! We have an exciting and engaging activity that will keep your students hooked. Get ready for a mystery picture reveal, as your students tackle 16 questions. Correct answers turn green and reveal an image, while incorrect answers are highlighted in red. This self-grading activity is available in both Google Sheets and a printable PDF format, providing you with flexibility and convenience. Plus, with an included answer key, you can effortlessly monitor your student's progress and pinpoint areas for improvement. Your students will be eager to dive into this enjoyable and enriching learning experience!