Hi, and welcome to parenthood.LOL.This is very normal behavior.I found some things that helped me through this, and hopefully they will help you.Mad isnt bad.It is however inconvenient, disruptive, and embarrassing as a tantrum in the middle of the grocery store aisle can be.Anger is a signal just as a tantrum is. She cant speak and tell you what she needs,wants,ect. The only way she can express herself is to act out.She may feel that her needs arent being meant because we dont know what they are. I do not doubt for a second that you are not meeting her needs, but the question remains....what are they? Is she tired,hungry, thirsty, bored,teething?We dont know yet. We need to let our children know that anger is okay and natural, just as there other feelings are. Certainly we need to also teach them not to let there anger carelessly or intentionaly hurt themselves or others. Learn not to be destructive to his or her own or others property. But what better classroom,to learn to express anger productively than a safe and secure home of parental love and acceptance.Your home.When she is having an outburst let her know you respect her feelings(I know she is only 10 months, but it will eventually sink in, and she will understand)and that you love her.Validate the feeling and emotion and limit the behavior.You might say, for example:"I see how angry you are, but you may still not hit."or "I see you are upsetabout this,Even so,I expect you to clean up you toys." Be careful not to convey to you daughter that she shouldnt feel mad.Whatever she does to press those buttons, stay calm. Dont give in just to make peace.If you do, she will learn very quickly exactly what works to get what she wants.As for temper tantrums, you could do as above or ignore them.This is not a power struggle, and or bids for independence. Say yes to your child as much as possible,even if it's a qualified yes."Yes,we can play with your blocks after lunch."Everything will be fine, and some may not agree with my guidance, but I live a very peaceful life, and have a peaceful home....at least today....Have a great night.