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High school  
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In this demonstration activity, students make structural models of gas molecules using pipe cleaners and polystyrene balls and test their molecules for their resonant frequency. Students shake the models, count vibrations, and compare the resonance... (View More)

In this textbook chapter, students are introduced to Mendelian inheritance and the biological processes through which changes in DNA are created and propagated within a population. An activity teaches students about dominant and recessive alleles,... (View More)

Audience: High school
Materials Cost: Free

This model demonstrates convection currents and uses water, food coloring, a cup of very hot water and a votive candle as heat sources. Movie clips of demonstration setup and convection in action are provided. This activity is supported by a... (View More)

This introductory textbook chapter presents data demonstrating decreased global biodiversity and its link to human activity. The resource includes a field-based student investigation of local biodiversity, links to current news articles, and an... (View More)

In this lab activity, student teams hypothesize which source has a greater becomes CO² concentration: their breath, auto exhaust, or air in the classroom. They test gas samples from each of these sources, plot data, and hypothesize about the... (View More)

This textbook chapter outlines the historical development of the Theory of Natural Selection, presenting classic evidence including Darwin's study of finch beak variation in the Galapagos Islands and Kettlewell’s investigation of the pepper moth... (View More)

Keywords: Adaptation; Evolution
Audience: High school
Materials Cost: Free

This is a lesson about using evidence to construct sequences of geologic events. Learners will interpret real NASA science data to identify features on the surface of Mars, determine the surface history of the area, calculate the size of features,... (View More)

This book contains 24 illustrated math problem sets based on a weekly series of space science problems. Each set of problems is contained on one page. The problems were created to be authentic glimpses of modern science and engineering issues, often... (View More)

Keywords: Mars
Audience: Middle school, High school
Materials Cost: Free

In this hands-on activity, students learn about the different realms of the Universe and explore their sizes and relative scales. They will be guided through a process that uncovers the immense sizes of the Sun, Solar System, Solar Neighborhood,... (View More)

Keywords: NSTA2013

This is a 15-day unit of inquiry-based lessons about the surface features of the Moon and the Earth and how these two worlds formed and continue to evolve. Students participate in real science as they help lunar scientists map the surface of the... (View More)