Challenger elementary school has 800800800 students. every wednesday, 12\%12%12, percent of the students stay after school for chess club. how many students attend chess club on wednesdays?

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:

Radiation was first detected by a ?

Which white house agency monitors the spending of federal agencies