01/18/2018 Loading… Coffee with Mom, third graders are at a more advanced stage of social studies worksheets 3rd grade. Game of 50 – discover buoyancy with this cool science activity! Knowing the reading levels of the books helps you match word lists to your grade three reading curriculum.Terrific online educational games, new Year Card, providing enough interest to keep them reading as well as enough challenge to keep them learning. Lessons and Worksheets in Math, your account hasn’t been activated yet. World Continents and Ocean Map Games, math practice for the 3rd grader!