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Instructional Video4:47
1
1
Socratica

Chemistry: Stoichiometry Part 2—Mass to Mass Conversions

9th - 12th Standards
The term stoichiometry derives from the Greek words stoicheion meaning element and metron meaning measure. The second Socratica video in a two-part series within a larger chemistry playlist introduces more complex stoichiometry problems....
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Instructional Video14:03
1
1
Socratica

Chemistry: Balancing Chemical Equations—Algebraic Method

9th - 12th Standards
If you love algebra, then you're gonna love this balancing method! Introduce young chemists to the algebraic method of balancing chemical equations using a video from an informative chemistry  playlist. The narrator works five sample...
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Instructional Video4:48
1
1
Socratica

Chemistry: Introduction to Unit Conversion and Dimensional Analysis (Part 2)

6th - 12th Standards
If you know how much carbon dioxide you produce in one breath, can you figure out how much you produce in one month? Socratica helps solve multi-step unit conversion problems. The video walks through how to set up these challenges and...
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Instructional Video7:23
1
1
Socratica

Chemistry: Average Atomic Mass (AMU, Daltons, etc.)

9th - 12th Standards
Scientists created a new measurement, the atomic mass unit, which is defined as carbon 12 = 12amu. So why isn't carbon listed as having exactly 12 amu on the periodic table? An installment from the Socratica chemistry playlist answers...
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Instructional Video7:33
1
1
Socratica

Chemistry: Percent Composition

9th - 12th Standards
How much oxygen is in water? Is it the same as the chemical formula? Learners observe the differences between a substance's formula and its percent composition with a video from Socratica's Chemistry Lessons series. The narrator...
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Instructional Video1:33
Howard Hughes Medical Institute

Repellant Ephrin Signals Guide Limb Innervations

6th - 12th Standards
The foot bone connects to the leg bone, but how? Learn about how neurons grow in the proper direction thanks to signalling. Observe what happens when they encounter a repulsive ephrin signal and the correction process that takes place.
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Instructional Video1:03
Howard Hughes Medical Institute

Neurons in Parietal Cortex Are Active During Straddling

6th - 12th Standards
How do scientists know which parts of the brain various functions use? With the help of an animated cat, viewers observe this process. They listen to the activity of one neuron as the cat steps over an obstacle and hear when the neuron...
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Instructional Video2:02
Howard Hughes Medical Institute

Measuring Circadian Activity in Drosophila

9th - 12th Standards
How many hours should be in a day? One species of drosophila naturally prefers a 24.5 hour day, while another strongly prefers a 19-hour day. An animation and graph share data from each of these species when exposed to the typical light...
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Instructional Video9:11
PBS

When Insects First Flew

6th - 12th Standards
Insects developed wings and the ability to fly earlier than any other animal—when exactly did that happen? Scientists know this fact but struggle to explain when insect wings developed and how this entirely new structure appeared. PBS...
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Instructional Video3:03
Howard Hughes Medical Institute

Translation (Advanced Detail)

9th - 12th Standards
Who said staying predictable is a bad thing? Translation follows a predictable four-step process. Scholars view a summary of each step with a breakdown of every detail, then examine different functions, highlighted with different colors,...
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Instructional Video8:04
Be Smart

3 Incredible Examples of Evolution Hidden in Your Body

9th - 12th Standards
Human traits trace back to simpler species—such as chickens, for example. Using the human genomes, scientists connect these traits to their ancestral origins. A video presentation highlights the structure of human DNA and makes a...

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