Linear perspective, estuaries, and water ways converge in a science-inspired art project. The class uses what they've learned about eco-systems, estuaries, and the food chain to create scale models of a local marsh. While the lesson...

Middle schoolers investigate the importance of food surpluses to the historical development of urban ecosystems.

Fifth graders learn the basics of drawing forms in two-point perspective. They can then transform their drawings into a fantasy building.

Cities are compared to living, breathing, metabolizing organisms. Fourth in a five-part series of lessons, this one focuses on the flow of materials through a city. Links to interesting websites and images make your delivery of...

Second in a series of five lessons, this lesson encourages preteens to consider cities as urban ecosystems. First, they keep a food diary for a few days. They visit the Natrional Agricultural Statistics Service website for current data...

Learners discover that material and energy uses by a city come from outside the city boundaries. They realize that the pathway of these material is linear instead of cyclical as they are in natural ecosystems.

Space shuttles traveled around Earth at a speed of 17,500 miles per hour, way faster than trains, planes, or automobiles travel! In the 13th installment of 22, groups graph different speeds to show how quickly spacecraft move through...

Most scholars associate density with floating, but how do scientists determine the exact density of an unknown liquid? The third lesson in a seven-part series challenges scholars to find the mass and volume of two unknown liquids. Each...

Litmus paper, why so blue? A chemistry lesson includes a pre-lab activity, practice calculating pH, an experiment measuring the pH in acids and bases, a titration demonstration, and a titration experiment. 

Learners explore the interdependence of the animals and plants in tropical rainforests. They explore the importance of conserving biodiversity and tropical food chains. They create a tropical forest food chain and identify species that...

Middle schoolers discover that throughout history cities have been centers of population but that human exploitation of fossil fuels was key to the growth of large cities worldwide. They research urban growth through a number of websites.

The goal of this task is to examine some population data for large cities from a modeling perspective. Students are asked to decide if the population data can be accurately modeled by a linear, quadratic, and/or exponential function, and...