Dynamic Remodeling of Individual Nucleosomes Across a Eukaryotic Genome in Response to Transcription
The eukaryotic genome is packaged as chromatin with nucleosomes comprising its basic structural unit, but the detailed structure of chromatin and its dynamic remodeling in terms of individual nucleosome positions has not been completely defined experimentally for any genome. We used ultra-high–throughput sequencing to map the remodeling of individual nucleosomes throughout the yeast genome before and after a physiological perturbation that causes genome-wide transcriptional changes. Nearly 80%
Make a Moon Flipbook
This OLogy activity provides insight into the phases of the Moon and why it looks a little different each night. The activity begins with an explanation about how the Moon itself doesn't really change, just our view of it. Then kids go to "See the Moon in Action," an interactive illustration of the Moon's orbit around the Earth, in which they can see what the Moon looks like from Earth at eight different positions in its orbit. The activity ends with a Moon Watch Log, a printable PDF file, that
DNA in a Blender
This simple OLogy experiment provides insight into genetics by allowing kids to see and hold real DNA. The activity begins with an explanation about how the Moon, itself, doesn't really change, just our view of it. Then kids go to "See the Moon in Action," an interactive illustration of the Moon's orbit around the Earth, where they can see what the Moon looks like from Earth at eight different positions in its orbit. The activity ends with a Moon Watch Log, a printable PDF file, that kids use to
This NASA site explains the three major types of atmospheric aerosols - volcanic emissions, desert dust, and anthropogenic aerosols - and how they affect global climate. The site discusses the generation and atmospheric distribution of these aerosols, as well as the chemical and physical processes by which they create global cooling.
This site features Java Applet, QuickTime, and Flash animations that illustrate characteristics and functions of the atmosphere. They show how atmospheric temperature, pressure, and density change with respect to changing altitude, the way different kinds of radiation (x-ray, ultraviolet, visible, and infrared) act in various levels of the atmosphere (troposphere, stratosphere, mesosphere, and thermosphere/ionosphere), how oxygen gas and chlorofluorocarbons (CFCs) interact with ultraviolet radia
Stereotypes of the French
This unit comprises four major lessons which are distinct yet cumulative. In the first lesson, the students will lay the groundwork for their examination of French stereotypes by generating those stereotypes themselves. They may draw, write, or find examples of what they think are "typical" French things. In the second lesson, they will be required to change perspective -- instead of being the examiners, they will be the examined culture. Students will look at various examples of stereotypes of
Doing the Decades, 1890-1941: Group Investigations in Twentieth Century U.S. History
This is a two-month team research project for 9-10th graders that uses Library of Congress resources to focus on long-term change in U.S. history. Students gather, analyze, and evaluate primary and secondary sources; develop their own conclusions; and refine their writing.
Uncertainty, Lags and Nonlinearity: Challenges to Governance in a Turbulent World
Prof. Homer-Dixon looks at systems displaying high levels of uncertainty. Using the example of climate change, he asks whether standard "management" approaches used by policymakers are enough or if we must find new approaches in times of uncertainty. Global financial, climate, energy, and food challenges exhibit similar characteristics - all emerge from systems exhibiting high levels of uncertainty, countless unknown unknowns, time lags, threshold effects, occasional chaotic behavior, and someti
Evidence of rising sea level: Coastal erosion and plant community changes
A Carolina Environmental Diversity Explorations "virtual field trip" that examines the causes and effects of changes in sea level, both short-term (as a result of storms) and long-term (as a result of climate change).
KS2 Numeracy SATs revision 4
The presentation (introduction) revises what a fraction is, how to make equivalent fractions or write fractions in their simplest / lowest terms, how to change between improper fractions and mixed numbers and finally how to work out a fraction of an amount. The levels test these aspects of fractions. The final level tests all of the skills. Most answers are entered using an on-screen keypad, with some multiple choice questions. The order of questions is randomised. Progress is tracked and numero
Chemistry Unit One
The module contains the following levels: Metal Compounds Alcohols Periodic Table and atomic structure Acid base reactions - Group 2 elements Energy Change
To read,vocabulary, grammar, writing: Who kann ich muffler zubereiten?
You will practice your reading skills and vocabulary about Judicial system and nationalities. You can change adjectives correctly. You will learn to write sentences in which you present typical Court cases.
Changing the Culture of the Academy: Toward a More Inclusive Practice
Mission Statement Changing the Culture of the Academy explores ways that the academy might incorporate the challenge of diversity as it pertains to its core mission and practice. Participants will consider new paradigms for rethinking the academy that are inclusive of various cultural and disciplinary traditions, learning styles and identities. This will include opening a dialogue about these issues across all disciplines, from the social sciences and humanities to the physical and life sciences
Winogradsky Column Unit: Chemical and Physical Change
This two-part activity leads Physical Science students, grades 8-12, to explore chemical change using Winogradsky Columns. Part 1 constructs student concepts concerning chemical and physical changes. Part 2 asks students to compare physical versus chemical changes and observe chemical changes in a Winogradsky Column, and teaches them to build their own column. It includes the following student pages: introductory lesson, Winogradsky Column lesson, challenge your thinking activity sheet, how to m
Cephalopod Lesson Plans
This collection of lesson plans, created by the Bermuda Biological Station for Research, highlights color change in cephalopods. This page provides links to each lesson plan, which are in PDF format and feature an informative, image-rich introduction followed by a hands-on laboratory activity. The lesson plans highlight cephalopod color change, vision, light quality, and light quantity.
Surface Ozone Protocol
The purpose of this activity is to measure ozone concentrations at ground level. Students deploy a strip of paper that changes color in the presence of ozone. They use an ozone reader to determine the amount of ozone in ppb as indicated by the color change of the paper strip. Intended outcomes are that students will learn to measure the concentrations of ground-level ozone in the atmosphere and to observe changes in the concentrations over time. Supporting background materials for both student a
Optional Barometric Pressure Protocol
The purpose of this activity is to measure air pressure. Students record atmospheric pressure using a barometer or altimeter. Intended outcomes are that students gain an understanding that barometric or altimeter pressure varies and its increase or decrease indicates an upcoming change in the weather. Students also learn that the air has weight. Supporting background materials for both student and teacher are included.
Water Vapor Protocol
The purpose of this activity is to measure the total precipitable water vapor (column water vapor) in the atmosphere above an observer's site. Students point a GLOBE/GIFTS water vapor instrument at the sun and record the voltage readings from a digital voltmeter. They observe sky conditions near the Sun and perform the Cloud Protocols. Intended outcomes are that students understand the concept that the atmosphere prevents some of the sun's light from reaching Earth's surface, how water vapor mea
The purpose of this resource is to observe plant green-down and report greendown data to help validate estimates of the end of the plant growing season. Students monitor the change in color of selected leaves of trees, shrubs or grasses.
Connecting the Parts of the Study Site
The purpose of this resource is to help students articulate and integrate their existing knowledge about the air, water, soil, and living things by viewing them as interacting parts of a system. Students visit a study site, where they observe and recall their existing knowledge of air, water, soil, and living things to make a list of interconnections among the four Earth system components. They make predictions about the effects of a change in a system, inferring ways these changes affect the ch