Tomatoes, Swimming, and Learning

I transferred some tomatoes that we'd grown from seeds to the backyard.  They sat there without growing for what seemed like weeks.  Now, all of a sudden, they've grown a couple of feet in the past couple of weeks!

Isabelle has been taking swim lessons on and off for years.  Now, this week, all of a sudden, she is breathing to the side, learning to dive, and just generally actually starting to swim.

"Mr. Rideout - I don't get it." "Mr. Rideout, this is too hard!" and then, at the end of the year, "Oh, I really thought that stuff we did at the beginning of the year was easy!"

I'm told the tomatoes are working on their roots, out of sight, underground for those first couple of weeks.  Then, when they're ready with their root structure, they shoot up above ground.  Is this why teaching and learning is so hard?  So much unrewarding (for both student and teacher) laying down of roots?