The Prokaryotic Cell examines a prokaryotic cell by describing its structure.

The Importance of Carbon analyzes the importance of carbon by explaining how carbon is uniquely suited to form biological macromolecules

Once we knew that quasicrystals could be produced in a laboratory, Paul Steinhardt, Princeton University, set out to see if they might exist naturally, spending hours carefully examining minerals in museums in the hopes of stumbling upon...

2003 Nobel Laureate Antony Leggett, University of Illinois, describes his belief that reductionistic approaches to physics are not always the right way to proceed, describing how the possible breakdown of the laws of quantum mechanics...

Duke University neuroscientist Jennifer Groh describes an intriguing hypothesis that might account for the often hard to imagine intermediate stages of evolution while highlighting how evidence for one aspect of the theory might involve...

Princeton University physicist Paul Steinhardt describes why so much of material science necessarily has a trial-and-error component to it.

Princeton University physicist Paul Steinhardt describes how physicists can reveal the underlying atomic structure of materials by scattering other particles off them.

Particle physicist Nima Arkani-Hamed (Institute of Advanced Study) describes how preoccupations with "what's new" in physics miss the bigger picture.

Neuroscientist John Duncan (Cambridge) describes some of the tests associated with Charles Spearman's mysterious "g factor."

Nobel Laureate in Physics Anthony Leggett (Illinois) describes the so-called Anthropic Principle that some invoke to answer the "fine tuning problem" of cosmology.

University of Chicago cosmologist Rocky Kolb describes the history of dark matter: how it was overlooked by most physicists for decades together with current hypotheses of what it might be and experiments to determine which one is valid.

Physicist Paul Steinhardt, Princeton University, describes his sense of excitement when, shortly after he determined the diffraction pattern his theoretical new material would produce in a laboratory, someone showed him an experimental...

University of Chicago cosmologist Rocky Kolb relates how he reacts very differently to dark matter than dark energy: dark matter he regards as an opportunity, while dark energy "drives him nuts".

UCLA psychologist Martin Monti describes how he developed the hypothesis that language and mathematics might be linked to a certain syntactical structure in our brains and how he went about experimentally testing the idea using fMRI...

Cognitive scientist Victor Ferreira (UC San Diego) highlights the key issue of "retrieval" so integral to sentence production.

We investigate a less familiar corner of Rossini’s writing, namely the Preludio Religioso from his Petite Messe. Unusually, the movement is written for Harmonium. This composer insights lesson goes on to explore the initial fugal...

Tammy Brecht Dunbar, M.Ed., S.T.E.M. teaches 5th grade in Manteca Unified School District. She is a 2018-19 Fulbright Teachers for Global Classrooms Fellow, won the ISTE 2018 Literacy PLN Award for Cultivate World Literacy and was named...

"Dictatorships and Theocracies" analyzes the purposes, structure, and functions of dictatorships and theocracies.

"Compare Types of Democracy" analyzes the purposes, structure, and functions of various types of direct and representative democracies.

“Informational: Problem/Solution” video lesson explores informational texts, focusing on the problem and solution structure and explaining how to identify problems and solutions in texts.

Plastids and Mitochondria examines energy transformations by describing the fundamental roles of plastids and mitochondria.

This video will demonstrate how to create an armature for a paper maché sculpture.

“Organizing an Argument” will explain how to structure a valid, clear argument.

The Hoover Dam discusses the history, construction, and physical features of the Hoover Dam.