1. Bones and Muscles: Identifying bones (jaw, rib, skull); leg movement caused by pairs of muscles; movement happens when muscles contract and relax. 2. Planets and Space Systems: Counting how many planets friends can name; eight planets = full Solar System; planetary systems include stars, planets, and asteroids. 3. Electrical Circuits and Conductors: Switch controls lamp; adding a lamp reduces brightness; metals conduct electricity, plastic is an insulator and blocks current. 4. States of Matter and Melting: Ice lolly melts in warmth; heat changes solid to liquid; melting is a physical change, not chemical. 5. Food Chains and Animal Types: Plants are producers; mice are omnivores (eat plants and animals); owls are carnivores with backbones (vertebrates). 6. Volcanoes and Energy Transfers: Volcano parts (ash cloud, crater, lava, magma); volcanoes form at crust breaks; electrical energy turns into light, sound, and heat; light travels in straight lines to the eyes.