LearningPlanet.com is a production of Planet Interactive.
LearningPlanet.com is an advertising-supported resource for parents, teachers, and students. The company created many interactive learning software for companies such as Lightspan, Jostens Learning which is now Compass Learning, Houghton Mifflin, Educational Activities, and many others. Their main focus is to create learning activities and tools which empower homeschool parents as well as classroom teachers. At the site you will be able to find many categories such as: students, activities, articles, worksheets, games, quizzes, puzzles and teacher tools. If you desire you can search activities by grade level: pre-kindergarten, 1st-3rd, 4th-6th and 7th plus; by subject: 123s, ABCs, geography, math, phonic and more or you can search by category: seasonal, worksheet and homework. So if you want kids to study in a fun way check out this site. 
