Elementary Olympiad Material Creation

I'm in need of high-quality educational materials for an elementary school Olympiad. The coverage domain should include Mathematics, Science, and English. The primary focus must revolve around intriguing practice problems, replete with real-world applications, fostering problem-solving skills in students.

Ideal applicants would have:

- Previous experience with competitive examination content formulation
- Strong grasp over the mentioned subjects
- Deep understanding of the learning capabilities of elementary school students