I am very disappointed in the Turbo Twist Math product. The skill level can only be adjusted for the Learn It mode. This mode only displays questions and answers without any interaction from the child. The questions asked in other quiz modes range from 2+3 to 81 + 256. My child was very frustrated. Even a child that could answer 81 + 256 in their head would not want to work through the 2+3 questions. Not being able to adjust the skill level on all modes is a huge design fault. This toy was a waste of money!