Here is the recipe I use for play dough:
I started by making microwave play dough. Put 2 cups of flour, 2 Tablespoons of oil, 1 cup of salt, 2 cups of water, and 1 Tablespoon of cream of tartar. Mix that in a microwavable bowl with a whisk.
Next, add the food coloring. (It takes about 50 drops of yellow and 15 drops of red to make this orange if you use regular food coloring. I had some orange food gel that I used.)
Next, place it in the microwave for 1 minute. Pull it out and stir with a spoon. Place back in for another minute. Continue this until the mixture becomes a dough. It took mine 4 minutes. Let it cool for a couple of minutes. When you pull the dough from the bowl, it becomes very soft and pliable. Knead it until it is soft.