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In this quick activity about size and scale (on page 2 of the PDF under What's Nano?

In this activity, learners will rate the day, a book, or something else on a scale from -2 to 2. This activity works well for groups of all ages.

In this activity, learners map their world by drawing a plan of their bedroom.

In this online interactive challenge, learners choose items to represent the Earth or solar system, then determine other items to represent the Moon, or Milky Way based on their relative size.

“Exploring the Solar System: Big Sun, Small Moon” is a hands-on activity that explores the concept of apparent size and allows visitors to experience this phenomena using familiar objects—a tennis bal

This game presents you with several different choices you can make in the course of your everyday life to increase your level of physical activity and be healthier.

Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

In this activity, learners explore how distance can affect the way we perceive the size of an object.

Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.