Orange foods tend to be healthy, such as oranges, carrots and orange peppers. Preschoolers might be more willing to taste these healthy foods if you make the tasting seem like more of a party. Cover the table with orange cloths, have children wear party hats and put out bowls filled with orange foods. You can also put out cubes of orange cheddar cheese and serve orange cookies or orange gummy bears for dessert. You might also make it into a game by blindfolding children before handing them pieces of food. See if they can guess what orange food they're holding using smell and touch.
Teach children about art and primary and secondary colors by having them make their own orange. First explain that yellow and red are primary colors, and when mixed together they create orange, which is a secondary color. Put out a variety of red and yellow art supplies, such as paints, watercolors, tissue paper and markers. Cover the tables with white paper and ask children to test the art supplies to see which will combine to make orange. Encourage them to combine materials. For instance, will red tissue paper placed on top of yellow paint look orange?
Declare one day to be "Orange Day." Encourage children to wear orange clothing to school. If they don't have orange clothes, suggest that they wear a combination of red and yellow. Take students on an "I Spy" walk around the building to see how many orange items they can spot. Have children practice writing their letters on orange paper. You can also spread out orange finger paint on a table, then post the word "orange" where children can see it. Encourage them to use their fingers to write the word in the paint.
Pumpkins come in a variety of shades, so you can use them to teach children about comparisons. Line up a selection of pumpkins and ask children to put them into order from the lightest to the darkest. Ask children to guess why some pumpkins are lighter orange and some are darker. Give children magnifying glasses. Have them examine the pumpkins closely to see if they can see any differences in the skin of a lighter-colored pumpkin versus the skin of a darker orange pumpkin.