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In this activity, learners discover that nanoparticles of gold can appear red, orange or even blue. They learn that a material can act differently when it’s nanometer-sized.

In this demonstration, learners discover that nanoparticles behave differently, in part because they have a high surface area to volume ratio.

In this activity, learners use their sense of smell to explore the world on the nanoscale.

This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

In this activity, learners use sieves with different-sized holes to sort balls by size.

In this activity, learners make self-assembled polymer spheres.

In this activity, learners create a necklace of wheat germ DNA. Learners add alcohol to wheat germ so that the DNA clumps together.