Core Skills Analysis
Science
- Lihan van der Merwe learned that DNA is a real, observable part of living things and that it can be extracted from a banana, which showed how biology connects to hands-on laboratory work.
- During the DNA workshop, Lihan learned basic ideas about heredity and the role of DNA in living organisms, moving from an abstract concept to a concrete experiment.
- The camera obscura experience helped Lihan understand how light travels and how images are formed, giving a practical introduction to optics and the science of vision.
- By building a small pinhole camera with different size lenses, Lihan explored how changing materials and openings affects image creation, reinforcing cause-and-effect thinking in physical science.
Tips
To deepen Lihan van der Merwe’s understanding, revisit the DNA experiment by comparing the banana DNA extraction with another fruit to see whether the visible results differ. A simple follow-up chart could help Lihan record observations, predict outcomes, and explain why DNA can be extracted from living cells. For optics, try a dark-room pinhole camera challenge using different hole sizes to explore image sharpness and brightness, then compare what happens when lenses are added or removed. It would also be useful to sketch the camera obscura and label how light enters and forms an image, linking the model to how the eye works. These activities would turn the visit into a mini inquiry unit combining biology, physics, and scientific observation.
Book Recommendations
- The Way Things Work Now by David Macaulay: A highly visual explanation of how everyday machines and scientific devices work, including light and image concepts.
- The Magic School Bus Inside the Human Body by Joanna Cole: A fun, accessible introduction to body systems that can support understanding of how the eye and other organs work.
- DNA Is Here to Stay by Samantha Fowler, Rebecca Roush, and James Wise: A clear science text that introduces DNA and genetics in a way that connects well to hands-on DNA activities.
Try This Next
- Draw and label the steps of banana DNA extraction.
- Write 3 quiz questions about how a pinhole camera and the eye are similar.
- Create a compare-and-contrast worksheet: camera obscura vs. human eye.
- Experiment log: test different hole sizes and record which makes the clearest image.