Try photoreading and making sure you include the answers or trick section. Your inner mind then has the understanding of the way the problem is solved for you to start working it out consciously.
Also before you get stuck too long on any one problem take time out to photoread the whole textbook again. This may help in clarifying your thinking.
Another tip is to photoread additional textbooks on the subject not just the one you're working with for class. Most of the additional books you won't even have to activate but be open to it. One of the others might just be crying out to be activated because it shows the answer better for you conscious mind to understand or an alternative way of understanding it.
Alex
