The study went through, I believe, about every instance where Jesus prayed. The plan covered the places both where Jesus modeled prayer intentionally for the disciples (The Lord’s Prayer for example) and where Jesus just prayed without any intentional modeling. These were times that Jesus left and went up on a mountain to pray, went alone to a solitary place to pray, etc.
The study revealed one thing: overwhelming Jesus taught prayer by silently modeling it for his disciples and the “crowds.” He spent more time praying than He did talking about prayer. The disciples truly had to follow His lead and not just His words on prayer.
Jesus believed, at least as evidenced by His practice, that the best way to teach prayer was to engage in it.
Prayer in our own lives needs to be something we don’t talk about, but that we do. We don’t call attention to it – we just do it.