Butterflies, starfish, and symmetry

The exhibit introduces the differences between radiation symmetry and two-sided symmetry animals through model display and physical interaction combined with graphic and textual content. With the help of mirrors, visitors can compare the symmetrical structures of the two animal systems and understand the significance of the two symmetrical structures in the history of life evolution. The exhibit consists of a booth, butterfly models (half blue flashing butterflies and half golden crowned butterflies), starfish models, mirror panels, and fixed frames. There are two animal models fixed on the styling booth, and grooves are carved at their respective symmetry axes. Visitors can insert the mirror acrylic board into the grooves to complete interactive observation. Operating Instructions 1 Observe the starfish and butterfly models on the booth, pay attention to the detailed features and symmetrical axis groove positions of the two models Pick up the acrylic mirror panel, insert it into the groove between the two animal models, and observe the complete image reflected by the mirror. three Combining the exhibit's graphic and textual introductions, compare the observed images, and clarify the differences between radiation symmetry and two-sided symmetry.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.