In this video segment from Cyberchase, the CyberSquad replaces a piece of track to get the Madre Bonita Express to the Mother's Day harvest.

This video adapted from the Valdez Museum & Historical Archive, explores what happened during the Great Alaska Earthquake of 1964 through original footage, first-person accounts, and animations illustrating plate tectonics.

This short video and interactive assessment activity is designed to give fourth graders an overview of 24-hour clocks.

This short video and interactive assessment activity is designed to give fifth graders an overview of 24-hour clocks.

The goal of this lesson is to introduce students who are interested in human biology and biochemistry to the subtleties of energy metabolism (typically not presented in standard biology and biochemistry textbooks) through the lens of ATP as the primary energy currency of the cell. Avoiding the details of the major pathways of energy production (such as glycolysis, the citric acid cycle, and oxidative phosphorylation), this lesson is focused exclusively on ATP, which is truly the fuel of life. Starting with the discovery and history of ATP, this lesson will walk the students through 8 segments (outlined below) interspersed by 7 in-class challenge questions and activities, to the final step of ATP production by the ATP synthase, an amazing molecular machine. A basic understanding of the components and subcellular organization (e.g. organelles, membranes, etc.) and chemical foundation (e.g. biomolecules, chemical equilibrium, biochemical energetics, etc.) of a eukaryotic cell is a desired prerequisite, but it is not a must. Through interactive in-class activities, this lesson is designed to spark the students’ interest in biochemistry and human biology as a whole, but could serve as an introductory lesson to teaching advanced concepts of metabolism and bioenergetics in high school depending on the local science curriculum. No supplies or materials are needed.

This art history video discussion examines Jackson Pollock's "One: Number 31", 1950, Oil and enamel paint on unprimed canvas, 1950 (MoMA).

This segment from Swift: Eyes through Time traces the history military officers and engineers discovering a strange phenomenon in the sky that astronomers now know are gamma-ray bursts.

This short video and interactive assessment activity is designed to teach fourth graders about multi-step addition of weights with compound units (metric units) - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about adding compound units in years and months.

This short video and interactive assessment activity is designed to give fourth graders an overview of weight-based english-unit word problems.

This short video and interactive assessment activity is designed to teach fifth graders about converting integer and fraction sums into decimals.

This short video and interactive assessment activity is designed to give fourth graders an overview of measuring capacity (metric units).

This short video and interactive assessment activity is designed to give fifth graders an overview of measuring capacity (metric units).

This video and accompanying interactive assessment practice was designed to teach overview of addition sums to first graders.

This short video and interactive assessment activity is designed to teach second graders an overview of addition (sums to 100).

This short video and interactive assessment activity is designed to teach fourth graders about solving multi-step weight problems with subtraction (metric units) - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about using a scale and multi-step calculations to find weight in grams i.

This short video and interactive assessment activity is designed to give fifth graders an overview of addition and subtraction in kilograms and grams.

This short video and interactive assessment activity is designed to give fourth graders an overview of weight in metric units.

This short video and interactive assessment activity is designed to teach fourth graders about two-step subtraction of weights (english units) - word problems.