Visit this website,
www.chesapeakefamily.com
And I'll explain why now, read on
figure out why they are doing the behaviors that you have listed
1. do they need more attention and assurance from their caregiver, this is a new and unfamiliar world to them, and alot of infants and children have their own personalities, and fears just like adults, if not more, even if they do not have the words to tell you, they still are human and know when they are suffering.
2. give them something they like, something sweet, a piece of candy.
3. give them a hug, and let them learn to trust you and/or their caregiver
4. then they will learn to be able to listen to you, and go through proper stages of development
5. help them to adapt to child things, like enjoying toys, cartoons, etc.
I was a babysitter, providing child care a few years back, and this is some of what I learned.
When they learn to like you, sometimes, things just go better.
Hope it works out.
You didn't list this problem in your post, but the public library has some good resources for child caring.
My local library had a booklet, titled, "Big Book of Family Health"
Let me share, even if you already know this, or don't need it, maybe it will help you in some way now or in the future.
Teeth Grinding
Grinding can be associated with daytime stress, so help kids
relax.
Encourage
physical activity and fresh air, it helps kids fall asleep faster
How to Break The Habit of Parting with the Pacifier
Good Sleep
Dim the lights
Light, soothing sounds, music
Bedtime snack
You may be able to access more useful information on their website at
www.chesapeakefamily.com
You may not live in Maryland, but the website is world wide, good stuff, the internet!
God Bless