Group items tagged

"In this Instructable, I'm going to be showing you how to build your own crack the code game in which you use a rotary encoder dial to guess the randomly generated code to the safe. There are 8 LEDs on the front of the safe to tell you how many of the digits you've guessed are correct and how many are in the right place as well. The safe is initially open, allowing you to put something into the inside compartment. The Arduino and battery are housed in a separate compartment in the back. You then push the dial to lock the safe, which is done using a servo on the inside of the door. You then need to input the code by turning the dial to select the digits and pushing the dial to confirm each digit. After your fourth digit is chosen, the safe displays how many of your digits are correct and how many of them are in the correct place using the red and green LEDs on the door. "

"Back in the 1980s, a group of social workers in Jamaica visited low-income homes one hour a week for two years, bearing age-appropriate toys for the kids and advice on child rearing for the parents. Researchers tracked the outcomes, and a generation later, the results are in. The children whose homes were visited by social workers became adults who earn wages that are 25 percent higher than those earned by peers who had not been visited. Their I.Q.s are an average seven points higher, and they are less likely to resort to crime or suffer from depression. Other studies, including several recent ones in the United States, have shown similar results, contributing to a consensus on the importance of early childhood development that has led governments around the world to increase spending on the first five years of life. In Latin America and the Caribbean, a region of longstanding social and economic inequality, several countries have been especially ambitious. Brazil and Chile doubled the coverage of day care services over the past decade, while in Ecuador they grew sixfold. These investments build on historic gains in child nutrition and health. But while Latin American children are now healthier and more likely to attend preschool, they still lag far behind in learning, particularly in the areas of language and cognition, when compared with their counterparts in wealthy countries. What are we doing wrong? ..."

"UnoArduSim es un software que simula en la pantalla de nuestro ordenador una placa Arduino Uno y otros dispositivos habituales de entrada y salida. Incluye motores de corriente continua y servomotores, buses de comunicación serie RS232, I2C, SPI, generador de ondas analógicas y digitales, altavoz piezoeléctrico, LEDs, pulsadores, resistencias pull-ups y pull-downs, potenciómetros deslizantes, panel de seguimiento de las variables del programa y un osciloscopio virtual para la visualización de señales de salida analógicas y digitales."

"1. Blogging enables reflection. This is true for both students and educators. Too often do we go through our days, class to class, with minimal opportunities for reflection on our experiences or the information that we have acquired along the way. Blogging offers the opportunity to take a step back and connect with our learning and place it in the context of the bigger picture. Make reflection an assignment or part of another assignment - it is an important component to learning. For students: This is not the easiest thing to accomplish - blogging takes time and that is a finite resource during a busy class period. There is great opportunity in academic support periods or advisory classes for students (particularly in 1:1 schools) to blog. Many advisory classes take place throughout the day, which is a great break point for students to create based on their learning from that day. For teachers: This type of reflection can and should be compiled into your lesson planning for future lessons. Take what you learned from teaching and learning that day and incorporate it into the next day's lessons. Find time to do this during a conference period during your day or right after school. Yes, it is tough to get in the habit of doing a new thing - but once you start using reflection through blogging, I think that your lesson planning will be easier and much more meaningful. 2. Develop an Authentic Audience An authentic audience is a great way to increase rigor and in all of my experiences has led to increased performance by students. Authentic audiences in blogging could mean any number of things - family members, students from other classes, students from other buildings, other teachers, individuals interested in the content from around the world, etc. A student knowing that their work may be seen by people other than what they consider their 'typical audience' (read: teacher) typically spends more time and exerts more effort to creating a quality p

"As an educator who is addicted to Twitter I have always read about students getting introduced to Twitter and wondered how it would work. After reading and reading I have finally decided to give it a go. Here is my introduction to Twitter in my classroom. Last Tuesday, the day started like any other. Roll call, discussion, introduction to an activity and a bit of a laugh with my Year 7 and 8 Technology class. We had been discussing the importance of being an active online user and being a positive digital citizen (the students are preparing some presentations for Year 2-3 children later in the term). The conversation moved into learning environments and we discussed the small and "un-student friendly" (their words) environment that they were currently sitting in. "Take the teachable moment and run with it" my inner, energetic teacher yelled from my shoulder. So there we were talking about the "Ultimate Learning Environment", when one of my students asked me "Why is social media so big?". Good question I thought, why is it 'so big'. So we unpacked that question and broke it down. We talked about Social Media and what it was and how it worked, they gave me excellent examples and we tied it back into our discussion about digital citizenship. From this point, as a class, we decided we would use social media to help us with our learning. The students had no idea how it could work. I suggested twitter and how I use it. We pulled up my profile and saw how it worked (discussion only). The decision was then made -> Let's ask the twitterverse to help us!! On rolled Monday 5th May and in our first class (I see this group twice a week) we decided that tomorrow would be the day, we would ask twitter for their advice on "What makes a GREAT learningenvironment?". The students already have some fantastic ideas and a plan of where they want to see their environment heading but they needed some depth to their plan and some other opinions outside of

"hoy vamos a hacer una práctica con Arduino y un LDR ( un sensor de luz) y para ponerle un poco de sazón a la táctica vamos a utilizar este sensor para decodificar señales lumínicas enviadas desde un dispositivo Android, en código Morse. De modo que además de conocer cómo podemos conectar y programar Arduino para utilizar este tipo de sensores LDR, también vamos a divertirnos un rato enviando texto a través de el led de un dispositivo Android en código Morse y Arduino lo va a decodificar y a mostrar el texto en el display LCD de 16×2."

"Drained fertile peatlands around the globe are hotspots for the atmospheric emission of laughing-gas -- a powerful greenhouse gas called nitrous oxide, which is partly responsible for global warming and destruction of the ozone layer, a new study shows. Research into natural peatlands such as fens, swamps and bogs, as well as drained peatlands, found that either draining wet soils or irrigating well drained soils boosts the emission of nitrous oxide significantly. Led by researchers at the University of Birmingham and the University of Tartu, Estonia, the study took in 58 peatland sites around the world. These included locations in the United States, Australia, Brazil, South America, Australia, New Zealand, East Africa, Southeast Asia, Siberia and Europe."

"Carbon dioxide (CO2) is a gas essential for life- animals exhale it, plants sequester it. It exists in Earth's atmosphere in comparably small concentrations, but is vital for sustaining life. CO2 is termed a greenhouse gas (GHG) - a gas which absorbs and emits thermal radiation creating the 'greenhouse effect'. Along with other greenhouse gases, such as nitrous oxide and methane, CO2 is important in sustaining a habitable temperature for the planet: if there were absolutely no GHGs, our planet would be simply too cold. It has been estimated that without these gases, the average surface temperature of the Earth would be about -18 degrees celcius.1 Since the Industrial Revolution, however, energy-driven consumption of fossil fuels has led to a rapid increase in emissions of CO2, disrupting the global carbon cycle and leading to a planetary warming impact. As an international community, UN member parties have set a target of limiting average warming to 2 degrees celcius above pre-Industrial temperatures."

"Our core ecological problem is not climate change. It is overshoot, of which global warming is a symptom. Overshoot is a systemic issue. Over the past century-and-a-half, enormous amounts of cheap energy from fossil fuels enabled the rapid growth of resource extraction, manufacturing, and consumption; and these in turn led to population increase, pollution, and loss of natural habitat and hence biodiversity. The human system expanded dramatically, overshooting Earth's long-term carrying capacity for humans while upsetting the ecological systems we depend on for our survival. Until we understand and address this systemic imbalance, symptomatic treatment (doing what we can to reverse pollution dilemmas like climate change, trying to save threatened species, and hoping to feed a burgeoning population with genetically modified crops) will constitute an endlessly frustrating round of stopgap measures that are ultimately destined to fail."

"With little water, scorching temperatures, and not much arable land, the UAE currently imports 80% of its food. Can it go local? In an industrial park built off a highway in the arid land between Abu Dhabi and Dubai, a sprawling new indoor farm will soon grow tomatoes under LED lights in a climate-controlled warehouse near a plastic production facility and other factories. The farm, the first in the world to commercially grow tomatoes solely under artificial light, is one part of a push to transform food production in the United Arab Emirates, where 80% of food is imported. The government realizes that to be resilient, it will need to find new ways to grow food in a desert climate with little rain and temperatures that regularly stay above 100 degrees."

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"El conocimiento liberado de patentes, con apoyo del Estado y una academia conectada con las necesidades de la industria, puede facilitar el desarrollo tecnológico local."