My first week in cahsee prep was great! i learned a lot of new things and reviewed a lot of old things. We went over scientific notation and place values. Revolutionary prep is very helpful and effective, because when i get a answer wrong it helps me WORK THROUGH the problem to better understand it and get the answer correct. I am very good at scientific notation and adding and subtracting positive and negative numbers. However i am still having a difficult time with fractions and working through problems that have a lot of steps.