Part 7 investigates hexagons and why and where they appear in nature. Students can experiment with bubbles and see how a bubble uses the least material to cover a surface to improve understanding. The video explains some surface tension and air mass physics to force a bubble into a specific shape.
![Multiple circles on a blue background](https://pinnguaq.com/wp-content/uploads/2021/09/concentric-circles-and-tessellations-nature-300x165.jpg)