Raising children its one of the toughest job. It is as if you have to make a pot by hammering it and putting it in shape. Children are like raw pottery. They can be moulded into whatever shape you want but one wrong step can cause much damage. For this you need to teach the first and foremost thing is patience. Best way to do it is whenever you are cutting vegetables or fruit s keep the leftovers on one side and give a garbage bag to your child and tell him/her to collect it in the bag. he may do it slowly but that will ultimately make him more pateint.