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A fun discrepant event for cell membrane transport. We introduced the terms "diffusion", "osmosis" and "semipermeable" today. Different extracts (peppermint, lemon, cinnamon, hazelnut, etc.) go inside the balloons. You have to redo a decent amount between classes because the scents go away after a while. Regardless, it was a fun day.
How do Plants Breathe? Science Experiment for Kids
Kids will love this simple science experiment as they get hands-on with the process of photosynthesis and transpiration!