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In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.

In this lab, learners experience how dolphins and other echolocating animals use their senses to locate and identify objects without using their sense of sight.

This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.

Learners use a mortar and pestle to extract clove oil from cloves using denatured alcohol. They put this oil on paper, which they can take home.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

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.

In this activity, learners investigate the sense of hearing and plan and conduct their own experiments.

Young learners investigate and observe the properties of three liquids -- water, vegetable oil, and corn syrup. They use their senses to collect data and ask and answer questions.

In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients.

In this activity (12th activity on the page), learners conduct an experiment to demonstrate how muscles are constantly feeding information to the brain about what they are doing.

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

In this activity, learners use household materials to investigate and explore their ability to smell an odor.

In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.