We completed this lab from Nano-links which the students learn about cohesive and adhesive forces, hydrophilic and hydrophobic surfaces and interactions and observed effect of liquids on surface characterizes and related this to new nanotechnologies used today. The link for the lab and PowerPoint is:
We first reviewed the vocabulary of cohesive, adhesive, hydrophilic and hydrophobic with using comics. The student drew a comic for each word. I use:
http://www.makebeliefscomix.com/
To save time and due to limited time, I pre-printed some pictures so the students wrote the captions.
The students were excited to use Magic Sand and see what it could do. We tested water, oil and alcohol on all three squares. They also liked activity two with the pepper sand. I think the students understood these concepts using the labs. The PowerPoint did a great job relating this to real world examples. We watched the video on real world application of Clear n Clean:
We also read more about Nanotechnology Materials using the link:
http://www.understandingnano.com/fabrics.html
I did not do but showed the kids:
http://www.nsta.org/about/pressroom.aspx?id=51046
We discussed how Stain Resistant pants are a plus and variety of Nanotechology Applications with fabric.
