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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.

In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).

In this activity, learners use measurement concepts to make models of what their body parts might look like if they were a snake or a chameleon.

In this activity, learners work in groups to create a time line representing significant moments in their lives.

In this activity, learners mark their height on a height chart and discover how tall they are in nanometers.

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 observe and discuss a simple model of a wet scrubber, a device for cleaning industrial air pollution.

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

In this activity, learners place cards featuring biological structures in order by their relative size from largest to smallest.

In this activity, learners examine nanoscale structures of common things.

Learners build a model of a pollution control device--a cyclone. A cyclone works by whirling the polluted air in a circle and accumulating particles on the edges of the container.

In this graphing exercise (page 2 of the pdf), learners compare their own height to the length of various sharks.

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.

Learners observe a simple balloon model of an electrostatic precipitator. These devices are used for pollutant recovery in cleaning industrial air pollution.

In this activity, learners perform an experiment to find out what determines a flower's color.

In this science and language arts activity, learners study fish anatomy and make their very own 3D paper fish.

In this story time program, young learners listen to the Dr.

Learners take on the role of environmental engineers as they design water filters.

This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

In this quick activity (page 1 of PDF under SciGirls Activity: Exercise and Memory), learners will investigate what happens to bubble gum when it is chewed for 5-10 minutes.