Of course you can use the quotient rule, but it is usually not the easiest method. If we do use it here, we get $${d\over dx}{10\over x^2}={x^2\cdot 0-10\cdot 2x\over x^4}= {-20\over x^3},$$ since the derivative of 10 is 0.
1 Young children can't tell the difference between fantasy and reality. 2  Your preschooler's rich imagination is a big part of his normal development, but that means it is usually hard for him to tell the difference between what's real and what's imaginary.
But it can be suppressed in particular contexts.. The current focus on testing in schools, and the idea that there is only one right answer to a question, may be hampering development of creativity among kids, Beghetto said. There's not much room for unexpected, novel, divergent thought, he said. But the situation is not hopeless, Beghetto said. In fact, there's evidence to suggest that, worldwide, youngsters are very creative, particularly with their use of digital media, Beghetto said. And a recent study found that, at least in their playtime, kids are becoming more imaginative. Experts agree changes can be made in the classroom to cultivate creativity.