Please choose the correct ending to complete the given sentence: Health: [header] How to use pictures and colors to teach autistic kids [title] Work with one single color at a time. [step] Teaching colors can be very difficult when it comes to autistic children, as they find it hard to make associations. If the child is surrounded with many items of a similar color, this can be very confusing for him.

Ending1: [substeps] Using one color at a time can help the child start to recognize lines in the light. Create a " barrier " between your child and the color. Ending2: [substeps] If the child loves colors, start with four or five colors. Then, try working with the exact same colour each time as well. Ending3: Instead, work with one color all at once. [substeps] Use more space at first, and then work back with more colors as your child follows along. Ending4: [substeps] Start with one single color at a time and it's shades. Keep three pictures in front of the child to show him the difference between light green, dark green and regular green.

Answer format: ending1/ending2/ending3/ending4