Identifying colors in an activity, visually tracking their classmate as they move across the room, and identifying the shape of every day objects are examples. Bright lighting can help a child see and attend to visual materials more consistently. Adjust the light both natural and artificial to determine what is best. Controlled incandescent lighting may be better than fluorescent lighting. Give the child time to respond to the materials that are being presented.
Color vision is usually intact, and color can be used effectively.
Yellow and red are possibly easier to see and can be used to outline numbers, letters, or pictures, to color code, or to attract attention to something you want the child to look at. It is also important to keep the color of materials constant to avoid confusion. This also applies to visual cues in general which should also be consistent over time and location. If the child uses a red bowl at home and this is how he knows it is time to eat then the same should be done at school. Watch to see if the child has a preference for size or color.