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

In this activity, learners explore how the application of nano-sized "whiskers" can protect clothing from stains.

In this chemistry challenge, learners identify an unknown white powder by comparing it with common household powders.

In this challenge, learners have to figure out in what order to combine five solutions to change the color from clear, to yellow, to blue, and back to clear.

Learners are challenged to create solutions that conduct electricity and make a buzzer buzz (or an LED light up).