Produce at least two photographs, one should convey rhythm, and the other pattern. Remember that in rhythm there needs to be a sequence in the picture, so that the eye will follow a direction and experience an optical beat.
The the pattern photograph, be careful with the framing. Pay attention to your distance from the subjects and/or your choice of focal length, in such a way that you show no boundaries to the pattern. Patterns work strongly when they fill the frame, so that the eye can imagine them continuing well beyond it. When you have completed the exercise order all the images with a note of what they represent about the elements of design.
Freshly harvested carrots from the garden laid out on the grass form a rhythmic pattern across the frame, almost like notes on sheet music. The photo could probably meet the criteria for pattern as well, but I think there is sufficient movement of the eye (both up and down and across) for it to be rhythmic.
Walking through the atrium of the Vancouver Public Library I looked up at the glass ceiling above and immediately noticed the repetitive pattern of the roof and the office tower building visible through the glass. The curving girders and intersecting pipes provide an interesting abstract of the two buildings. There are enough lines and rectangles in the frame that lead the eye through the photograph.
Freeman, Michael (2007). The Photographer’s Eye: Composition and design for Better Digital Photos, The Ilex Press. Lewes, England.
Kelby, Scott (2014). The Adobe Photoshop Lightroom 5 book for digital photographers, New Riders.