Jack is a flat out puzzle champ - he put this 30-piece together all by himself in about 10 minute. It's so fun to watch his concentration and see the tiny glimmer in his eyes when he make a fit. No shouting, cheering - not even a smile really. But you can tell he is proud with each piece and he is determined to get it right.
Caroline likes to take puzzles apart. You can probably predict the tension that ensues.
Sam just likes to eat the pieces that fall on the ground when no one is looking.