Students learn about sound and sound energy as they gather evidence that sound travels in waves. Teams work through five activity stations that provide different perspectives on how sound can be seen and felt. At one station, students observe oobleck (a shear-thickening fluid made of cornstarch and water) “dance” on a speaker as it interacts with sound waves (see Figure 1). At another station, the water or grain inside a petri dish placed on a speaker moves and make patterns, giving students a visual understanding of the wave properties of sound. At another station, students use objects of various materials and shapes (such as Styrofoam, paper, cardboard, foil) to amplify or distort the sound output of a homemade speaker (made from another TeachEngineering activity). At another station, students complete practice problems, drawing waves of varying amplitude and frequency. And at another station, they experiment with string (and guitar wire and stringed instruments, if available) to investigate how string tightness influences the plucked sound generated, and relate this sound to high/low frequency. A worksheet guides them through the five stations. Some or all of the stations may be included, depending on class size, resources and available instructors/aides, and this activity is ideal for an engineering family event.

Students are provided with an understanding of sound and light waves through a "sunken treasure" theme a continuous storyline throughout the lessons. In the first five lessons, students learn about sound, and in the rest of the lessons, they explore light concepts. To begin, students are introduced to the concepts of longitudinal and transverse waves. Then they learn about wavelength and amplitude in transverse waves. In the third lesson, students learn about sound through the introduction of frequency and how it applies to musical sounds. Next, they learn all about echolocation what it is and how engineers use it to "see" things in the dark or deep underwater. The last of the five sound lessons introduces acoustics; students learn how different materials reflect and absorb sound.

Echolocation is the ability to orient by transmitting sound and receiving echoes from objects in the environment. As a result of a Marco-Polo type activity and subsequent lesson, students learn basic concepts of echolocation. They use these concepts to understand how dolphins use echolocation to locate prey, escape predators, navigate their environment, such as avoiding gillnets set by commercial fishing vessels. Students will also learn that dolphin sounds are vibrations created by vocal organs, and that sound is a type of wave or signal that carries energy and information especially in the dolphin's case. Students will learn that a dolphin's sense of hearing is highly enhanced and better than that of human hearing. Students will also be introduced to the concept of by-catch Students will learn what happens to animals caught through by-catch and why.

Why do humans have two ears? How do the properties of sound help with directional hearing? Students learn about directional hearing and how our brains determine the direction of sounds by the difference in time between arrival of sound waves at our right and left ears. Student pairs use experimental set-ups that include the headset portions of stethoscopes to investigate directional hearing by testing each other's ability to identify the direction from which sounds originate.

Students follow the steps of the engineering design process to create their own ear trumpet devices (used before modern-day hearing aids), including testing them with a set of reproducible sounds. They learn to recognize different pitches, and see how engineers must test designs and materials to achieve the best amplifying properties.

Music can loosely be defined as organized sound. The lesson objectives, understanding sound is a form of energy, understanding pitch, understanding sound traveling through a medium, and being able to separate music from sound, can provide a good knowledge base as to how sound, math, and music are related. Sound exists everywhere in the world; typically objects cause waves of pressure in the air which are perceived by people as sound. Among the sounds that exist in everyday life, a few of them produce a definite pitch. For example, blowing air over half full glass bottles, tapping a glass with a spoon, and tapping long steel rods against a hard surface all produce a definite pitch because a certain component of the object vibrates in a periodic fashion. The pitch produced by an object can be changed by the length or the volume of the portion that vibrates. For example, by gradually filling a bottle while blowing across the top, higher pitches can be generated. By organizing a few of these sounds with a clearer pitch, the sounds become closer to music. The very first musical instruments involved using various objects (e.g. bells) that have different pitches, which are played in sequence. The organization of the pitches is what transforms sounds into music. Since the first instruments, the ability to control pitch has greatly improved as illustrated by more modern instruments such as guitars, violins, pianos, and more. Music is comprised of organized sound, which is made of specific frequencies. This lesson will help define and elaborate on the connections between sound and music.

The purpose of this task is to have students compute and interpret an expected value, and then use the information provided by the expected value to make a decision. The task is designed to encourage students to communicate their findings in a non-technical form in context.

Sounds of War, by Susanna Hast, is a book on the aesthetics of war experience in Chechnya. It includes theory on, and stories of, compassion, dance, children’s agency and love. It is not simply a book to be read, but to be listened to. The chapters begin with the author’s own songs expressing research findings and methodology in musical form. Susanna Hast is Academy of Finland postdoctoral researcher with a project “Bodies in War, Bodies in Dance” (2017–2020) at the Theatre Academy Helsinki, University of the Arts. She does artistic research on emotions, embodiment and war and teaches dance for immigrant and asylum-seeking women in Finland.

The 2014 Russia–Ukraine conflict has transformed relations between Russia and the West into what many are calling a new cold war. The West has slowly come to understand that Russia’s annexations and interventions, interference in elections, cyber warfare, disinformation, assassinations in Europe and support for anti-EU populists emerge from Vladimir Putin’s belief that Russia is at war with the West. This book shows that the crisis has deep roots in Russia’s inability to come to terms with an independent Ukrainian state, Moscow’s view of the Orange and Euromaidan revolutions as Western conspiracies and, finally, its inability to understand that most Russian-speaking Ukrainians do not want to rejoin Russia. In Moscow’s eyes, Ukraine is central to rebuilding a sphere of influence within the former Soviet space and to re-establishing Russia as a great power. The book shows that the wide range of ‘hybrid’ tactics that Russia has deployed show continuity with the actions of the Soviet-era security services.

This course provides a global history of South Asians and introduces students to the cultural, social, economic, and political experiences of immigrants who traveled across the world. It studies how and why South Asians, who have migrated to America, Europe, Africa, the Caribbean and the Middle East, are considered a model minority in some countries and unwanted strangers in others. Through literature, memoirs, films, music, and historical writing, it follows South Asian migrants as they discovered the world beyond India, Pakistan, and Bangladesh.

This unit begins by introducing students to the historical motivation for space exploration. They learn about the International Space Station, including current and futuristic ideas that engineers are designing to propel space research. Then they learn about the physical properties of the Moon, and think about what types of products engineers would need to design in order for humans to live on the Moon. Lastly, students learn some descriptive facts about asteroids, such as their sizes and how that relates to the potential danger of an asteroid colliding with the Earth.

This workshop explores how designers might become as sensitive to space as they are to objects. Through a number of projects and precedent studies, architectural design is studied in relation to the Space Between. The design process is studied in reverse, considering space first and objects second. This is not to imply that objects are not important, but rather that space is equally important.

The seminar explores current issues in space policy as well as the historical roots for the issues. Emphasis on critial policy discussion combined with serious technical analysis.The range of issues cover national security space policy, civil space policy, as well as commercial space policy. Issues explored include: the GPS dilemma, the International Space Station choices, commercial launch from foreign countries, and the fate of satellite-based cellular systems.

Reviews rocket propulsion fundamentals. Discusses advanced concepts in rocket propulsion ranging from chemical engines to electrical engines. Topics include: advanced mission analysis, physics and engineering of microthrusters, solid propellant rockets, electrothermal, electrostatic, and electro-magnetic schemes for accelerating propellant. Some coverage is given of satellite power systems and their relation to propulsion systems. Space Propulsion begins with a review of rocket propulsion fundamentals. The course then proceeds into advanced propulsion concepts, ranging from chemical to electrical engines. Propulsion system selection criteria and mission analysis are introduced. The bulk of the semester is devoted to the physics and engineering of various engine classes, including electrothermal, electrostatic and electro-magnetic. Specific topics include arcjets, ion engines, Hall thrusters and colloid thrusters.

From 1945 to 1991, the United States and the Union of Soviet Socialist Republics (USSR) engaged in the Cold War, a conflict in which the communist Soviet Union and the democratic United States competed for influence over countries around the world. During this era, the US and USSR also took their rivalry beyond earth into space through a series of aeronautic developments and flight tests known as the Space Race. After advances in defense technology during World War II and the United States’ use of atomic bombs, each side looked to propel its scientific and technological capability forward by building new missiles, rockets, and spacecraft. The Soviets had many early successes in the Space Race, including the launch of the first satellite, Sputnik (1957), and the first man in space, Yuri Gagarin (1961). However, the United States caught up and eventually overtook the Soviet Union, particularly when American astronaut Neil Armstrong and the crew of the Apollo 11 mission became the first humans to land on the moon in 1969.

Students are given the following engineering challenge: "The invasion has taken place and we need to find a new home. To ensure your survival beyond Earth's occupation you must design a shelter that can be built on another planet." Then students research the characteristics of a planet of their choosing. They design shelter that enables them to survive on a new planet, and explain it in words to the rest of the class. This is a great activity to add to a unit on the solar system.

Space System Architecture and Design incorporates lectures, readings and discussion on topics in the architecting of space systems. The class reviews existing space system architectures and the classical methods of designing them. Sessions focus on multi-attribute utility theory as a new design paradigm for space systems, when combined with integrated concurrent engineering and efficient searches of large architectural tradspaces. Designing for flexibility and uncertainty is considered, as are policy and product development issues.

In 16.89/ESD.352 the students will first be asked to understand the key challenges in designing ground and space telescopes, the stakeholder structure and value flows, and the particular pros and cons of the proposed project. The first half of the class will concentrate on performing a thorough architectural analysis of the key astrophysical, engineering, human, budgetary and broader policy issues that are involved in this decision. This will require the students to carry out a qualitative and quantitative conceptual study during the first half of the semester and recommend a small set of promising architectures for further study at the Preliminary Design Review (PDR).Both lunar surface telescopes as well as orbital locations should be considered. The second half of the class will then pick 1-2 of the top-rated architectures for a lunar telescope facility and develop the concept in more detail and present the detailed design at the Critical Design Review (CDR). This should not only sketch out the science program, telescope architecture and design, but also the stakeholder relationships, a rough estimate of budget and timeline, and also clarify the role that human explorers could or should play during both deployment and servicing/operations of such a facility (if any).

In this lesson, students are introduced to the historical motivation for space exploration. They learn about the International Space Station as an example of recent space travel innovation and are introduced to new and futuristic ideas that space engineers are currently working on to propel space research far into the future!

To understand the challenges of satellite construction, student teams design and create model spacecraft to protect vital components from the harsh conditions found on Mercury and Venus. They use slices of butter in plastic eggs to represent the internal data collection components of the spacecraft. To discover the strengths and weaknesses of their designs, they test their unique thermal protection systems in a planet simulation test box that provides higher temperature and pressure conditions.