1. Look at the two images side by side. 2. Carefully examine each image and try to find the DIFFerences between them. 3. Identify and mark the DIFFerences in the images. 4. When you have identified all the DIFFerences, check your answers against the answer key. 5. If you find any mistakes, go back and look for the Correct answer. 6. Once you have finished, you can move on to the next set of images. 7. Repeat the process until you have completed all the sets of images. 8. When you are done, you can compare your answers with the answer key to see how well you did. 9. If you want to challenge yourself, try to find the DIFFerences in the images faster than before. 10. Have fun!