What's good about some magazines these days is that they choose a specific target readership and develop ideas that are appropriate for that specific audience. Mailbox Primary is intended for teachers and moms who look after children in grades 1 to 3. These young minds are taught how to solve problems, given math and reading drills and teachers think that it's well-planned. Even Mrs. Olsen who's in our church was talking about Mailbox Primary over breakfast and praising it to high heavens. It's easy to see why.