11. "The puzzles will help sharpen the reader's analytical process, logical thinking and mathematical skills. 12. "You have to have some logical thinking to it, " reliever Braden Looper said. 13. He has written a book on logical thinking titled " How to Think ". 14. Barbauld's texts, however, emphasize the slow accumulation of knowledge as well as logical thinking . 15. It's really not logical thinking that the situation is going to be more calm," 16. Barbauld's texts, however, emphasize the slow accumulation of knowledge as well as logical thinking ." 17. In the concrete operational stage, children begin to demonstrate an overall more logical thinking process. 18. The puzzles are very diverse, the only common feature is that they require logical thinking . 19. Fluid ability and Piaget's operative intelligence both concern logical thinking and the eduction of relations. 20. The logical thinking in chess progresses by evaluating the immediate material gain in each move.