To create the Barn element in Little Alchemy, you will need to combine the following elements: Grass, Wheat, and Tool.
First, you will need to combine the Grass and Wheat elements together. To do this, simply drag and drop one element on top of the other. This will create the Field element.
Next, you will need to combine the Field and Tool elements together. Again, simply drag and drop one element on top of the other. This will create the Barn element.
The Barn element is a key component in many recipes in Little Alchemy, and is used to create a variety of other elements, such as the Horse, Barn Animals, Farm, and even the Farmer.