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In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

Learners use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor.

In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

In this four-day lesson, learners identify three-dimensional forms in castle design, research different parts of the castle with a focus on their uses, and design and enlarge a banner for the great ha

In this activity, learners try pouring water out of a regular cup and a miniature cup. It’s harder than it sounds! Learners discover that different forces dominate at different size scales.

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

In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

In this activity, learners explore the engineering behind seismographs and how technology has improved accurate recording of earthquakes.

In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

Water treatment on a large scale enables the supply of clean drinking water to communities.