Through active inquiry and investigation, Voyages in Third Grade Science explores science processes: units of measure for data collection; identification of current issues with the environment and earth; energy, motion of objects and property of matter; and the exploration of living things. 180 Lessons. If you are exploring curriculum's such as ABC Mouse, Ron Paul Homeschool or easy peasy homeschool, be sure to explore this Complete Curriculum first. Best Homeschool Curriculum and Cheap Homeschool Curriculum (Affordable)!