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Learners explore water adhesion and learn about why water molecules are more strongly attracted to some substances than others.

In this activity, learners investigate the history and development of agricultural biotechnology.

In this activity, learners explore how engineers work in a team to solve problems.

In this activity, learners explore how wind tunnels provide feedback to engineers about the performance and durability of products such as planes, cars, and buildings.

In this activity, learners practice the steps involved in a scientific investigation while learning why ice formations on land (not those on water) will cause a rise in sea level upon melting.

In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters, centimete

In this activity, learners find Xi'an, the archaeological area in China where the Terra Cotta Army was discovered, on a map or globe and look more closely at the relationship of the warrior site to ot

In this activity, learners create a working model of a nail clipper. This activity helps learners learn the basic principles of simple machines, engineering design and model building.

In this activity, learners review the history of gumball machines and explore potential and kinetic energy, while working in teams to build a gumball slide.

This activity (on page 2 of the PDF under SciGirls Activity: Earthquakes) is a full inquiry investigation into aerial imagery.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.

In this activity (page 12), learners apply the concepts of pixilation and pointillism to the world of biomedical science.

In this mechanical engineering activity, learners design shadow puppets with moving parts and use them to tell stories.

In this activity, learners make balloon models of disease-causing bacteria.

In this activity, learners explore how infrared technology is used by engineers to create equipment and systems for a variety of industries.

In this activity, learners explore the potential of interchangeable standard parts to create a large number of unique creations in different combinations.

What is the optimal environment for hatching brine shrimp? Using a scaffold, learners design and conduct experiments testing the effect of a single abiotic factor on brine shrimp cyst hatch rate.

In this activity, learners separate the protein from milk and and use it to make their own glue.

In this activity, learners use sets of cards to assign microorganisms to different groups.

In this activity, learners make a flip book that shows the progression of two solar events on reversible sides of the flip book.