What I learn from this chart is self-drive and motivation. When we have a target set in mind, and we are actually determined to reach it, we will STRIVE for it. I learn that from my young Al Fateh.
Al Fateh managed to 'find' tasks that can actually speed-up his process to get his Wii reward. He cleaned-up the toys in his room, read to Alwani, even helped me with the pile of clothes! Super subhanallah!
On the other hand, since Alwani was very contented with her princesses and pink skirts, she didn't even bother to update her stars. The three year old pinky-girl told me, "I have what I want, Ummi".
Thus, I learn that, when one is contented and not bothered of aiming or accomplishing of anything, one will just let it be. So, my husband and I decided, the next star chart up, Alwani must have a goal, too!! Insha Allah.