Thinking Skills Resources

I do my PRE-U and I have this subject called "thinking skills". We do not have a book for him and I'm struggling with it. We had to depend unsufficient note that our teacher provides. I checked the libraries for all thinking "book, but found nothing. this book is one in which borrow the library that covers the same lessons we do in class. The name of the book" reasoning ability of John Butterworth and Geoff Thwaites. Please answer me if you know a book or online resource that has the same content as this book. The book I mentioned has 2 parts: critical thinking and problem solving (math part). I have already visited the site http://tsa.ucles.org.uk. If you know more resources online that offer free thinking skills exercises, please let me know. Thank you

google.com
Possesses skills in math without test
and other types of math
you simply enter them as mathematical skils and it will appear
fairly easy