I don't know about maths, but I can help you out with science. This is what I did maybe it can help you out. I mainly worked with books, doing tons of practise tests. First of, there are three types of passages, Data Representation, Research Summaries and Conflicting viewpoints. Instead, of doing the whole practise tests, I just focused on each section individually and made sure I was profient on each of them. I followed this outline.
Example: Data Representation
1) Barron's Maths and Science Workbook(Read all data representation and worked through all the exercises)
2)Learned the definitions to get accustomed to vocabulary
3)Completed all practise tests from Mcgraw hill(10 practise tests=30 DR passages)
4) Mcgraw hill (6 practise tests=18 Data representation.)
I started with MCGraw hill as the tests are easier than the real ACT so they will get you used to doing this passage, the main thing here is for you to get used to doing the test timed. For data representation you should target to finish around 5-6m, most likely it will take you longer at first but with practise you'll improve.
5) Princeton Review 1,296 questions(6 tests=18 data representation passages)
6) Princeton Review Cracking the ACT(2 tests=6 DR passages)
Then I worked with PR
, at first your score will go down from the MCGRAWN and your time will go up. I initially got 4/5 with a time of 6.14 on MCGrawn but then on PR
I got 3/5 and a time of 10m. However, as I kept on practising I eventually improve to the point where I was consistently getting 4/5 or 5/5 with a time of around 5.40m.
7) Barron's tests(6 practise tests=18 DR passage)
Here, however I think I should have done something a bit different, as I got to the point that I should have found a book as with the same level of difficulty as PR
's as opposed to Barron's which was much more challenging than the real ACT. Here I was doing around 4/5 but with a average time of 6-7m. I think I'll get an older edition of Barron's or another PR
8) Repeat for all the other passages
I think this outline is less than perfect, however, I definitely improve my accuracy and the way I do this section, before I was completely lost but know I feel more confident as my time has decreased. Maybe other people in this forum can suggest other improvements.
I hope this helps you
By the way I strongly advise against online prep from Barron's or prep me among other companies(I tried different companies as it is very different from the one's in the books. In addition, most of the format is way off and it is sometimes confusing.
PS: I had already finished the Real ACT book, long before I did this outline so I had no equivalent, if anyone knows where I get older editions, of any of this books, please let me know.