My sister shows a toy to my daughter, she loves it and wanna have it immediately, but we need time to ship it here from USA. And I have and idea to take this chance to teach my 3 year old daughter about the value of having a reward.
But it's on theory, practically it's hard for me to give her a yellow flower. When I said I think I may give you yellow flower for today, her eyes moistened with tears then starting "i'm sorry mom, please don't give me yellow flower", sometimes she cries until I said "ok dear, I will only color one petal with yellow". So finally I decided one petal in yellow if she was a bit spoiled. Sometimes I let her colored the flower by herself and she said that she will colored it red, she thinks she deserve it for that day because she's obedient
Finally all flowers was colored and only one petal in yellow. And the toy comes here right on time for the reward. We had fun every night by choosing the colour to color the flowers and she learned the lesson about having a reward.