Gas Laws Manipulative - something I learned from another AP chemistry teacher years ago. Continuing the tradition of instructional sharing - I passed on the trick to a group of chemistry teachers today. Cover the variable that is constant (in the problem) and observe the relationship between the other two variables. #chemistry
The Alliance for Childhood has WONDERFUL research articles posted on their site free of charge, including: Facing the Screen Dilemma, The Crisis in Kindergarten, and the Crisis in Early Childhood, which is an article on high stakes testing and it's effect on early childhood education.