1. Plant parts and function: labeling roots, understanding stems transport water, observing flower color change with colored liquid 2. Forces and movement: push/pull classification, skateboard speed increase downhill, friction slows motion, water resistance in puddles 3. Materials and their uses: identifying strong, hard, heat-conducting materials for bridges and saucepans, choosing soft or dissolvable materials for clothing 4. Scientific investigations and fair testing: plant height growth based on distance from light, balloon rocket powered by air, towel absorbency experiment with bar chart 5. Energy and changes: pulse rate prediction after exercise, conditions for a fair test (same exercise, same time), importance of daily physical activity 6. Classification and grouping: animal classification by wings and habitat, living vs. once alive vs. never lived, sense organ for smell, plant wilting from dehydration