Four simple strategies—beginning with an image, previewing vocabulary, omitting the numbers, and offering number sets—can have a big impact on learning.

But the real impact was rippling far beyond NSE terminals. In trying to tame derivatives on Dalal Street, India may have unintentionally strengthened a market it cannot see, tax, or easily control—a ...

These student-constructed problems foster collaboration, communication, and a sense of ownership over learning.