What percentage do you need to pass an exam?

One common educational practice is to chart students' progress over time so that students can see their own improvement. these progress charts often lead to higher student achievement in the absence of other observable forms of reinforcement. the effectiveness of such charts in changing behavior illustrates the role of reinforcement as:

What did justice brown’s verdict in plessy v. ferguson state?

Which features are created on the exterior of a volcano when it erupts? check all that apply. vent crater hot spot lava flow boundary