Students are introduced to the concept of inertia and its application to a world without the force of friction acting on moving objects. When an object is in motion, friction tends to be the force that acts on this object to slow it down and eventually come to a stop. By severely limiting friction through the use of the hover pucks, students learn that the energy of one moving puck is transferred directly to another puck at rest when they collide. Students learn the concept of the conservation of energy via a "collision," and will realize that with friction, energy is converted primarily to heat to slow and stop an object in motion. In the associated activity, "The Puck Stops Here," students will investigate the frictional force of an object when different materials are placed between the object and the ground. This understanding will be used to design a new hockey puck for the National Hockey League.

Students are introduced to the latest imaging methods used to visualize molecular structures and the method of electrophoresis that is used to identify and compare genetic code (DNA). Students should already have basic knowledge of genetics, DNA (DNA structure, nucleotide bases), proteins and enzymes. The lesson begins with a discussion to motivate the need for imaging techniques and DNA analysis, which prepares students to participate in the associated two-part activity: 1) students each choose an imaging method to research (from a provided list of molecular imaging methods), 2) they research basic information about electrophoresis.

Immigrant and Refugee Families: Global Perspectives on Displacement and Resettlement Experiences uses a family systems lens to discuss challenges and strengths of immigrant and refugee families in the United States. Chapters address immigration policy, human rights issues, economic stress, mental health and traumatic stress, domestic violence, substance abuse, family resilience, and methods of integration.

In this activity, students work with quantitative data (charts, graphs, and tables) from the 1910 census and the 1911 Dillingham Commission Report to understand the lives of immigrants in the Ellis Island era. The activity includes an option designed for middle school and high school students, as well as a suggested strategy for elementary students. After studying the data, students write a narrative in the voice of an immigrant in 1910, incorporating the information gleaned.

In this activity students analyze a political cartoon, a presidential speech and an anti-immigration pamphlet from the early 20th century. After analyzing the documents, students write about why the United States passed immigration quotas in the 1920s.

This collection uses primary sources to explore immigration to the US and immigrant Americanization between 1880 and 1930. Digital Public Library of America Primary Source Sets are designed to help students develop their critical thinking skills and draw diverse material from libraries, archives, and museums across the United States. Each set includes an overview, ten to fifteen primary sources, links to related resources, and a teaching guide. These sets were created and reviewed by the teachers on the DPLA's Education Advisory Committee.

The students will learn about recent meteor strikes and the effects they can have. They will then examine their significance in the history of the planet, and what they do to the surface of a planet when forming a crater. The students will then experimentally determine how the size and impact velocity of a meteorite determine the size of the crater.

The course is designed to provide a better understanding of the built environment, globalization, the current financial crisis and the impact of these factors on the rapidly changing and evolving international architecture, engineering, construction fields. We will, hopefully, obtain a better understanding of how these forces of globalization and the current financial crisis are having an impact on the built environment and how they will affect firms and your future career opportunities. We will also identify, review and discuss best practices and lessons that can be learned from recent events. We will explore the international built environment" in detail, examining how it functions and asking what are the managerial, entrepreneurial and professional opportunities, challenges and risks in it, especially growing crossover and multi-disciplinary opportunities; and we will seek to understand what makes this "built environment" so different from other sectors."

Students will learn about the impact of enjambment in Gwendolyn Brooks' short but far-reaching poem "We Real Cool." One element of this lesson plan that is bound to draw students in is a compelling video of working-class Bostonian John Ulrich reciting the poem.

Students analyze archival material such as photos, documents, and posters, to understand the who was involved in constructing, and the lasting phenomenon of, the Transcontinental Railroad.

Students apply the design process to the problem of hiding a message in a digital image using steganographic methods, a PictureEdit Java class, and API (provided as an attachment). They identify the problems and limitations associated with this task, brainstorm solutions, select a solution, and implement it. Once their messages are hidden, classmates attempt to decipher them. Based on the outcome of the testing phase, students refine and improve their solutions.

Students are presented with an engineering challenge: To design a sustainable guest village within the Saguaro National Park in Arizona. Through four lessons and six associated activities, they study ecological relationships with an emphasis on the Sonoran Desert. They examine species adaptations. They come to appreciate the complexity and balance that supports the exchange of energy and matter within food webs. Then students apply what they have learned about these natural relationships to the study of biomimicry and sustainable design. They study the flight patterns of birds and relate their functional design to aeronautical engineering. A computer simulation model is also incorporated into this unit and students use this program to examine perturbations within a simple ecosystem. The solution rests within the lessons and applications of this unit.

Microsoft Excel is extremely useful for many different types of digital scholarship projects. This one looks at the ability of Excel to create time lines for historical projects using an Excel template developed for project time lines. Before starting I will warn the reader that because of the way Excel stores and handles dates, these time lines only work for dates after Jan. 1, 1900. There are some potential fixes for this that I hope to address in the future.

Most computer users have an incorrect, but useful, cognitive metaphor for computers in which the user says (or types or clicks) something and a mystical, almost intelligent or magical, behavior happens. It is not a stretch to describe computer users as believing computers follow the laws of magic, where some magic incantation is entered, and the computer responds with an expected, but magical, behavior.

This magic computer does not actually exist. In reality computer are machines, and every action a computer performs reduces to a set of mechanical operations. In fact the first complete definition of a working computer was a mechanical machine designed by Charles Babbage in 1834, and would have run on steam power.

Probably the biggest success of Computer Science (CS) in the 20th century was the development of abstractions that hide the mechanical nature of computers. The fact that average people use computers without ever considering that they are mechanistic is a triumph of CS designers.

This purpose of this monograph is to break the abstract understanding of a computer, and to explain a computer’s behavior in completely in mechanistic terms. It will deal specifically with the Central Processing Unit (CPU) of the computer, as this is where the magic happens. All other parts of a computer can be seen as just providing information for the CPU to operate on.

This monograph will deal with a specific type of CPU, a one-address CPU, and will explain this CPU using only standard gates, specifically AND, OR, NOT, NAND and XOR gates, and 4 basic Integrated Circuits (ICs), the Decoder, Multiplexer, Adder, and Flip Flop. All of these gates and components can be described as mechanical transformations of input data to output data, and the overall CPU can then be seen as a mechanical device.

Build equivalent fractions with different denominators. Match shapes and numbers to earn stars in the game. Challenge yourself on any level you like. Try to collect lots of stars!

Students use their singing voices to take turns improvising and creating melodic phrases on a given theme.

This art history video discussion looks at Marcel Duchamp's "In Advance of a Broken Arm", 1964 (fourth version, after lost original of November 1915) (MoMA).