In the early stages, there may be no symptoms associated with hip impingement or symptoms may be mild or vague. 1  Some typical symptoms include: 2  Stiffness in the thigh, hip, or groin. 3  The inability to flex the hip beyond a right angle.
The framework of Singapore Math is developed around the idea that learning to problem-solve and develop mathematical thinking are the key factors in being successful in math.
This prevents the need for reteaching as students move to the next grade. Thomas and his wife, Dawn, a native Singaporean, helped bring Singapore math to the United States in the late 1990s by adapting Singaporean textbooks and workbooks for the U.S. market through their company.