Yes , like a child .  But not as if one has not gone beyond the stage of childhood .
One must take all that is best of each developmental level and leave behind its weaknesses .This is a lifetimes's work  .   
I do remember gratefully the explanation a parish priest gave when I was a 3rd grader .
Jesus is alive and like us his blood is inside his body .  Where his body is ( bread ) the whole Jesus is alive .
Where his blood is (wine)  he , the whole Jesus is alive .  I had , before that only been taught from a catechism .  All that seemed to matter was a bone-dry mouth which was very scary for a little kid .  
I am sure God is delighted with the simple faith of a child .  Didn't Jacinta die young ?  Most of us have to go through purifying growth of faith over a long life .  This , too delights God and we are thankful for it .  There is always deeper and deeper meaning to be fathomed . 
The medium is the message and lousy teaching methods can and do destroy mystery and faith .