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In this activity (4th activity on the page), learners use their sense of smell to rate and arrange containers filled with different dilutions of a scent (like cologne or fruit juice) in order from wea

In this matching activity (3rd activity on the page), learners use their sense of smell to match pairs of opaque containers filled with various smelly items like orange peel, roses, or moth balls.

In this activity (2nd activity on the page), learners explore the sensitivity of their sense of touch.

In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.

This game for one to four players uses a deck of cards to develop mental addition skills.

In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

In this activity (1st activity on the page), learners explore their sense of taste and the structure of the tongue by taste-testing various foods.

Historically, sea floor mapping (bathymetry) was done by soundings.

In this activity (on pages 16-21), learners get a sense of geological time by understanding how big a million is.

This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.