Have you ever wondered how plants grow in different conditions? You can design an experiment to test how plants respond to different amounts of sunlight, water, or fertilizer. Or, if you love baking, you can investigate how different ingredients affect the texture and taste of your favorite cookies.
Another fun idea is to explore the five senses. You can conduct experiments to test how our senses perceive different stimuli, such as how different smells affect our sense of taste, or how different colors affect our mood. These experiments are not only fun, but also help us understand how our bodies work.
For example, have you ever noticed how some songs can boost your energy and make you feel happy, while others can make you feel relaxed and calm? You can design an experiment to test how different types of music affect our mood and behavior.
15 Best Chosen Science Fair Projects for 4th Grade - STEM Activities