The video resource "Dark Matter: Crash Course Astronomy #41" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
We're in Germany for a new and improved video about element 110, showing you exactly where it was created. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
The Portfolio Manager DataTrends series is the first-ever analysis of aggregate data stored within ENERGY STAR Portfolio Manager, pulled from a pool of hundreds of thousands of commercial buildings across the United States. This fact sheet examines how buildings are tracking not only their energy use, but also their water use in Portfolio Manager. Other statistics are also presented in an easy-to-read format.The resource, "Data Trends: Water Use Tracking" included in "Lesson 4 Water Load Estimations" is a part of "Unit 06 Load Estimations and Calculations" included in Energy & Sustainability ES - Course 3.
Very Fast Death Factor (Anatoxin-a) is found in many forms of blue green algae.
There are cosmic snipers firing at random into the unvierse. What are they and what happens if they hit us? The video "Death From Space -Gamma-Ray Bursts Explained" is a resource included in the Space sciences topic made available from the Kurzgesagt open educational resource series.
Guy Fawkes Night in the UK is a time for bonfires and fireworks. Here's some "death mix" to shed light on things.
The video resource "The Deep Future: Crash Course Big History #10" is included in the "Big History" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Deep Time: Crash Course Astronomy #45" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
This TED Talk looks at why bees are dying in droves.Why? Leading apiarist Dennis vanEngelsdorp looks at the gentle, misunderstood creature's important place in nature and the mystery behind its alarming disappearance. The resource, "Dennis vanEngelsdorp: A Plea for Bees" included in "Lesson 2 Bee Colony Collapse" is a part of "Unit 09 Biodiversity Decline and Sustainablility" included in Energy & Sustainability ES - Course 4.
Paul Andersen explains how density measures the compactness of a material. You can calculate the density of a material by measuring the mass and dividing this by the volume. Water displacement is an effective way to measure the volume of an irregular object.
In this first part of a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate the densities of several common, irregularly shaped objects with the purpose to resolve confusion about mass and density. After this activity, conduct the associated Density Column Lab - Part 2 activity before presenting the associated Density & Miscibility lesson for discussion about concepts that explain what students have observed.
Concluding a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate densities of several household liquids and compare them to the densities of irregularly shaped objects (as determined in Part 1). Then they create density columns with the three liquids and four solid items to test their calculations and predictions of the different densities. Once their density columns are complete, students determine the effect of adding detergent to the columns. After this activity, present the associated Density & Miscibility lesson for a discussion about why the column layers do not mix.
After students conduct the two associated activities, Density Column Lab - Parts 1 and 2, present this lesson to provide them with an understanding of why the density column's oil, water and syrup layers do not mix and how the concepts of density and miscibility relate to water chemistry and remediation. Topics covered include miscibility, immiscibility, hydrogen bonds, hydrophobic and hydrophilic. Through the density column lab activities, students see liquids and solids of different densities interact without an understanding of why the resulting layers do not mix. This lesson gives students insight on some of the most fundamental chemical properties of water and how it interacts with different molecules.
The video resource "Derivatives: Crash Course Physics #2" is included in the "Sociology" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
Deriving a formula for maximum projectile displacement as a function of elapsed time
Students design and create their own nano-polymer smartphone or tablet case. Students choose their design, mix their nano-polymer (based in silicone) with starch and add coloring of their choice. While thinking critically about their design, students embed strings in the nano-polymer to optimize both case strength and flexibility. Students may apply strings in a variety of ways in order to maximize their individual design’s potential. Determining the best mixing ratio is also key for success in this challenge.
Students find and calculate the angle that light is transmitted through a holographic diffraction grating using trigonometry. After finding this angle, student teams design and build their own spectrographs, researching and designing a ground- or space-based mission using their creation. At project end, teams present their findings to the class, as if they were making an engineering conference presentation. Student must have completed the associated Building a Fancy Spectrograph activity before attempting this activity.
This is an in class activity created for Organic Chemistry I at LaGuardia Community College.
A framework for thinking about how many detectable civilizations are out there.
Why do we even care about the Drake Equation. Thinking about the fraction of a planet's life when a civilization might be detectable.