Introduction to Cells--YouTube video by Frank Gregario--sorry the link hasn't worked. You can simply search for it in YouTube by title and find it. It is worth looking for as an introduction for cell study.
Center for Early Literacy Learning (CELL). This site has resources for early childhood intervention practitioners, parents, and other caregivers of children, birth to five years of age, with identified disabilities, developmental delays, and those at-risk for poor outcomes.
Paul Andersen takes you on a tour of the cell. He starts by explaining the difference between prokaryotic and eukaryotic cells. He also explains why cells are small but not infinitely small. He also explains how the organelles work together in a similar fashion