Last July, the Atlanta Public Schools became the poster district for teachers and principals behaving badly. State investigators found that, in 44 schools across the city, 178 teachers and administrators had systematically cheated on the state standardized tests taken by their students in 2009. The largest cheating scandal by far has cast a pall…

It can be difficult to find adequate strategies when teaching problem solving in a standard based mathematics classroom. The purpose of this study was to improve students' problem solving skills and attitudes through differentiated instruction when working on lengthy performance tasks in cooperative groups. This action research studied for 15 days…