Rm 10 yummy butter with bread

Room 10 in park estate school yr 5 was learning how to make butter. we wanted to know if home made was better than the shop butter. 
What you need
then we put 250 ml of cream a tea spoon of salt  now we need  a spatula and air tight container 
Method mix cream with electric mixer it will transform into a grainy substance keep mixing till its fluffy you will see stiff peaks breaks down into cottage cheese butter will separate from milk turning to butter milk throw away left overs put the butter in fridge kneading the butter washing the butter with half cup of butter use a spatula keep repeating the process water will go transparent you can use salt measuring