This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Linked-read sequencing is helping microbiome researchers remove some of the ambiguities produced by short-read metagenomic sequencing, but how the parameters of linked-read sequencing affect metagenome assembly quality has remained unclear. Using simulated data, a mock community and real metagenomic data, a new study recommends best practices for linked-read sequencing of microbial genomes. Results showed that assemblies of medium-abundance microbes could be substantially improved by choosing a deep read depth. Indeed, selecting a read depth between 120X and 140X is recommended to optimize assembly quality. A tradeoff was observed between read depth per fragment and DNA fragment physical depth, with a deep read depth per fragment generating more high-quality bins. and DNA fragment physical depth controlling total assembly length..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

This book includes the Learning Outcome: explain and recognize stages and milestones in physical, social, emotional, sensory, linguistic, and cognitive development for infants from birth to 15 months old. The objective meets the NAEYC Standard 1a [Knowing and understanding young children’s characteristics and needs, from birth through age 8] for educator preparation and the MA Core Competency 1.A.1 and 1.G.15 at the initial level. You will experience how an infant develops at an individual rate and has a personal approach to learning.

Prior to this lab, students will have read and learned about valley glacier processes, glacier mass balance, warm-based and cold-based glaciers, and can identify various glacier landforms formed by erosion. They will also have had an introductory lecture on ice physics, but that is not necessary to complete this activity.

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Students learn about sound propagation in the ocean through instructor-guided problem solving. The activity promotes a conceptual understanding of the physical and chemical factors that influence ocean acoustics, with applications to how whales communicate over long distances. The activity serves as a way to introduce the topic of ocean sound.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

In this lab we take a brief field trip to Adena Brook, a first order tributary of the Olentangy River in central Ohio. We observe the stream, its setting, its bedrock, determine some stream velocity profiles, and measure some basic chemical and physical properties of the stream water.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

This article discusses the importance of teaching students to reflect on text through direct instruction and modeling. The article includes a template that can be used with elementary students.

In this two-part activity, learners use everyday materials to visualize one mole of gas or 22.4 liters of gas. The first activity involves sublimating dry ice in large garbage bag. The second activity uses plastic bottles.

In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.

Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. It's easy to measure the period using the photogate timer. You can vary friction and the strength of gravity. Use the pendulum to find the value of g on planet X. Notice the anharmonic behavior at large amplitude.

Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Spreadsheets Across Curriculum module/Introductory chemistry course. Students build spreadsheets to examine unit conversions between the metric and English systems. Spreadsheet level: Beginner.

Visualize the gravitational force that two objects exert on each other. Change properties of the objects in order to see how it changes the gravity force.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"RXRβ is one of three types of retinoid X receptors, which play important roles in how cells grow, differentiate, and die and might be targets for the treatment of conditions such as insulin resistance, autoimmunity, and neurodegeneration. A recent study into the physical behavior of RXRβ could bring researchers closer to that possibility. A combination of lab experiments and computer modeling revealed the unique properties of the receptor’s AB region. This region, common to this family of receptors, enables the activation of target genes. But in RXRβ, researchers found, the AB region also supports liquid-liquid phase separation a biochemical phenomenon that is fundamental to the compartmentalization of the cell. As a driver of RXRβ’s physical behavior, this capacity for phase separation could also influence the receptor’s transcriptional behavior. Understanding how could give researchers a better idea of RXRβ’s role in disease and how it might be modulated to promote human health..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

These are notes prepared for a 7-day course at the QED Verein in Germany. The plan is to explain Feynman diagrams from their origin in quantum field theory to their application in homotopy theory. The course is targeted at a group of bachelor and master students from mixed backgrounds in mathematics, physics or related areas. The course starts with a recap of differential geometry, follows with elementary explanation of perturbative quantum field theory and finishes with the mathematical meaning in differential operators, the IBL-operad and knot theory. The course includes multiple exercises scattered throughout the text. 

Students practice making observations, describing physical characteristics of organisms, and interpreting information. In pairs, students sit back to back; one student describes a creature and the other draws based on the partner’s description.

Educators Guide for this unit:
http://education.eol.org/lesson_plans/2-5_ScienceSkills_BioblitzSkillbuilderOverview.pdf

Lessons in this unit:
Biodiversity Skillbuilder 1: Meet a Creature
Biodiversity Skillbuilder 2: ID That Bird!
Biodiversity Skillbuilder 3: How Diverse is Biodiversity?
Biodiversity Skillbuilder 4: Modeling Classification
Biodiversity Skillbuilder 5: ID Using a Dichotomous Key

(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)

A five-day old female presented to the Emergency Department, without symptoms, following parental notification of an abnormal newborn screen. No abnormal findings were noted on the patient's physical exam.

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.

Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Students are introduced to the important concept of density with a focus is on the more easily understood densities of solids. Students use different methods to determine the densities of solid objects, including water displacement to determine volumes of irregularly-shaped objects. By comparing densities of various solids to the density of water, and by considering the behavior of different solids when placed in water, students conclude that ordinarily, objects with densities greater than water sink, while those with densities less than water float. Then they explore the principle of buoyancy, and through further experimentation arrive at Archimedes' principle that a floating object displaces a mass of water equal to its own mass. Students may be surprised to discover that a floating object displaces more water than a sinking object of the same volume.