A fourth-grade student has a visual processing disorder and has difficulty recognizing the similarities and differences between visual images. In particular, he has trouble identifying common geometric shapes. Which of the following activities would be most helpful to the student in learning identify shapes? a. Finding hidden polygons or shapes on triangular grid paper b. Outlining common shapes with a black marker and counting the number of slides of the shape before naming the shape c. Reading definitions of common shapes and finding shapes on a worksheet that fit the definitions d. Creating tessellations using rotations and reflections of simple shapes