Young children in early elementary grade should know that the Sun is the major source of light and heat on Earth. As discussed in the previous biology units, they should have explored their natural environment and learned how life depends on the availability of water, food, air, and shelter. Based on this prior knowledge, children can take the next step and study how seasonal change affects life. They could observe (and record) evidence for seasonal change (temperature and rainfall). | Lecture Science 1 - Associate Degree in Education Lecture 17 - Dr. Arshad Bashir
