Have your students make an animated gif (see below) of the 8 moon phases. They could either find their own copyright free images online or you could provide them with images that aren't arranged in order. I used Dancing Crayon Design's Moon Phases clipart that I found on TpT {HERE} for $3.50. This pack comes with black and white images, clip art style images, outlined images, photo style images and full cycle images of the moon phases...GREAT deal!
Next, head to a gif maker site like gifmaker.me and upload the 8 images. Arrange the pictures in order by dragging and dropping. Download the gif to your desktop.
Finally, get your students writing by adding their gif to a Google Doc or Google Slides and write a paragraph about the moon phases. Here is an example:
Here is a FREE set of step by step directions (screenshots included!) and grading rubric if you are interested in carrying this out with your students:
Also, be sure to check out my newest instructional PowerPoint all about the moon phases: