Mathispower4u
Evaluating Algebraic Expressions
What types of mistakes do your classes make when evaluating algebraic expressions? A direct video lesson explains the process of evaluating algebraic expressions by substituting values for multiple variables. The instructor highlights...
PBS
Solving the Storage Problem
Clean, renewable energy is there for the taking ... how do we save it until we need it? A short video, part of an energy unit from NOVA, discusses the challenges of creating and storing electrical energy efficiently. The narrator...
PBS
Solar Power
One day's worth of sunlight can supply everyone on Earth with electricity for a year! Why, then, do we find ourselves in an energy crisis? Shine a light on solar energy with a short lesson and video. As part of a larger energy unit from...
PBS
Energy Defined
What is energy, and why do we need so much of it? Scholars explore the definition of energy as it relates to both conversion and consumption with a video and discussion questions. Part of an energy unit from NOVA, the resource provides a...
PBS
Toward a Smarter Grid
Did you realize that the latest innovations in technology get their electrical power from a system that's 100 years old? Help pupils make sense of the power grid using a short video and related questions. The lesson, part of NOVA's...
PBS
Wind Power
Wind power blows non-renewable sources away! Why are there not more wind power plants? Science sleuths track down the reasons behind our limited use of wind energy with a video from NOVA's energy unit. The resource covers the storage and...
PBS
Putting Energy to Use
From burning wood for heat to riding a bicycle, converting one form of energy into another is an everyday process! Using a video clip, learners discover the sources of the thermal, mechanical, and electrical energies that make our lives...
PBS
A Never-Ending Supply
If renewable energy means a never-ending supply of power, why aren't we already using it? A brief video clip, part of a large Energy unit from NOVA, discusses the limitless energy humans obtain from solar, geothermal, and tidal sources....
PBS
Growing Appetites, Limited Resources
Did you know that, as the world's population increases, its demand for energy increases at an even faster rate? Learners watch a short video about the world's energy crisis before discussing the sustainable alternative energy sources....
PBS
Solar Space Telescopes
See the sun shine as you've never seen it before! Captivate your class with an activity from NOVA's Sun Lab unit. Viewers learn about the advanced satellite-mounted telescopes NASA uses to monitor the sun at every wavelength of light,...
PBS
The Electromagnetic Spectrum
What can the electromagnetic spectrum tell us about the sun? As it turns out, quite a bit! See the sun in a whole new light with a video from NOVA's Sun Lab unit. The narrator describes the electromagnetic spectrum in terms of visible...
PBS
The Threat to Earth
Is Earth prepared for a massive solar storm? Examine the possibilities with an interesting activity, part of NOVA's Sun Lab interactive unit. Viewers learn about historical solar storms, the tools we have for protecting ourselves and...
PBS
Earth's Magnetic Shield
Our atmosphere is pretty amazing! How does it minimize the effects of solar weather? Scholars discover Earth's first line of defense against the sun—the magnetosphere. The activity, one of several in a sun unit from NOVA, explains how...
PBS
Solar Wind and Storms
Does the very thing that is responsible for life on Earth also have a dark side? Space scientists differentiate between sunspots, solar flares, and CMEs in an enlightening activity. The lesson, one of several in a unit presented by NOVA,...
PBS
The Dynamic Sun
Sunspots, solar flares, coronal mass ejections ... why is the sun so stirred up? Scholars watch animations of the interaction between moving plasma and magnetic fields and discuss the sun's behavior. The activity, part of NOVA's sun...
PBS
The Sun's Energy
How does the sun produce so much energy without blowing up? Viewers discover the delicate balance of inward and outward forces within the sun through a short video. The lesson includes discussion questions and is part of a larger sun...
PBS
The Anatomy of the Sun
Welcome to Sun 101! What better way to gain an understanding of our star than to learn about its anatomy? Physical science scholars peer inside to discover the inner workings of the sun through a video and discussion questions. The...
PBS
DNA Spells Evolution
In humans, the rate of mutation from one generation to the next is between 100 and 200 mutations. Discover the role of DNA mutation in evolution with an enriching lab activity.
PBS
Fossils: Rocking the Earth
Scientists learn about animals and plants living today by understanding the fossil record. A helpful resource includes a brief explanation of the process to help scholars complete the online game. It also mentions the gaps in knowledge...
PBS
Training Trees
Each branch of a phylogenetic represents a species, and you can trace each one back through history. A short video, the fourth of seven, introduces phylogenetic trees and the online game lab used in the unit.
TED-Ed
A Simple Way to Tell Insects Apart
Did you know an insect has unique mouthparts based on what and how it eats? This is a simple way to identify the order an insect belongs to. Watch a video that explains the interesting world of insect mouthparts.
SciShow
3 of the Strangest Moons in the Solar System
Explore characteristics of three moons that have traits all their own! An episode of a solar system video playlist explores three moons of the solar system: Miranda, Iapetus, and Hyperion. These moons of Uranus and Saturn vary in their...
SciShow
The Future of Interstellar Communication
Communication through the solar system is a challenging task. Sending probes to different locations in our solar system helps scientists learn about these bodies. As these probes are sent farther and farther from Earth, receiving their...
PBS
From the Cambrian Explosion to the Great Dying
Life before the dinosaurs was pretty amazing—and very fragile! Discover what Earth was like for Cambrian creatures, from the smallest ocean-dwellers to the first land animals. A video from an extensive biology playlist explores how early...