Usage: Use the long flash card in conjunction with the short and small flash cards. We use these signs to teach our babies to communicate distance and size
As baby gets more advanced you can introduce the added challenge of using size, distance or length as a descriptor of a variety of objects such as animals like ant and caterpillar, you can also use it contextually with food to describe a noodle or other items that are long in appearance such as a cucumber.
For an instructional video and tutorial on how to make the long sign, see here.