Remember:
- In 
Appcreate a method to handle the action that comes fromProductItem, and set it as a prop - Connect 
ProductItemform submission method, with a prop that comes fromApp. - In 
App, in the method that you created update the state adding the item to the cart - Pass the cart items information (remember that we need name, quantity and subtotal) to 
Cartcomponent - In cart loop through the items :)