Math can sometimes seem like a strange language from foreign land--one communicated in symbols, numbers, and geometric figures. When teachers talk about mathematical concepts, even familiar, garden variety words such as "parallel," "power," "even," "odd," "multiply," "difference," "product," "positive," and "negative" take on brand-new meanings.…

Internet-based courses are rapidly expanding professional development opportunities for teachers. Today, a small but growing number of organizations offer hundreds of classes enabling teachers to fulfill state requirements, accumulate continuing education units or professional development points, and earn graduate credit. Internet-based courses…