How many movies have Helene Takacs and Terry Notary collaborated on?

They have worked on 3 movies together! Their first movie together was Avatar (2009) while their highest rated movie together was The Hobbit: The Desolation of Smaug (2013). They have not worked together since The Hobbit: The Desolation of Smaug (2013). They are most known for their adventure films together.