Montessori sensorial materials

world’s largest generators of pollution (Hershkowitz 1 of 10). Paper mills contaminate rivers, produce air and water pollutants, and contribute to producing smog (Hershkowitz 1 of 10). As Sam Martin points out, “Compared to making paper from virgin materials, however, recycling is clearly more responsible to the environment” (Martin 3 of 7). Recycling aluminum cans uses only five percent of the energy needed to produce new aluminum cans (“Recycling” 2 of 2). About sixty-nine percent of the…

composite materials for structural application has been evaluated through Dynamic Mechanical Analysis. The effects of heating rate, sinusoidal forces on glass transition temperature Tgwere studied. In DMA LVDT controlled sinusoidal force is applied and measures the response of the input as shown in the figure 3. It measures parameters which are the signature properties of the material under supervision like storage modulus, loss modulus, tanδ which are helpful to predict the behavior of the…

Much has been made recently of the DIY foam roofing options that can be incorporated in your homes. Insulation is important to help keep away too much heat and cold outside temperatures inside the house. The great advantage to using foam roofing is the ease of installation. Since it is relatively easy to do, many can attempt do it on their own. This is one of the reasons why it has become popular. Insulation is necessary to protect the roof from weather getting into the cracks of the wood…

characteristics of hazardous materials stored in stationary tanks and facilities. The system is known as NFPA 704 and uses diamond shaped placards with blue, red, yellow and white to denote different levels of hazards for each category. Blue denotes the hazards to health with a number system from least to most severe, red denotes a fire hazard, yellow is an…

Jessica Martinkosky V100 Weyers Cave, VA 24486 Dear Ms. Martinkosky, I am writing to introduce you to the work of Marilyn Levine. She is a ceramics artist that specializes in making clay appear as leather. Unfortunately she is deceased however; she has dedicated her career to making hyper realistic renderings of leather objects that are entirely made from clay. Although many artists refine, vary or shift styles throughout their careers, Levine stuck to the realistic sculpture she devised 35…

Carports are like the garage spaces you have in your houses. It functions the same way in giving protection to your cars. The only difference is that carports are not fixated. Instead, it is a portable and retractable device you can bring with you in your outdoor trips. The best carports for this generation are the ones made of metal, usually of aluminum or steel. There are also that has core panels made of insulated polystyrene foam. This is also wrapped with steel or aluminum. Most metal…

Copper is a nonrenewable material. It comes from a mineral deposit that the time it takes to produce copper is too long to be concidered renewable. According to the Copper Alliance, copper is 100% recyclable. In fact, 9 million tones of copper is recycled each year. The recyclable process of copper uses 85% less energy than its original production. When a person is exposed to uncoated copper such as in coocking pans or drinking utenciles, copper can be toxic. Copper is a durable, tough…

When it comes to towing, the B&W Tow & Stow Hitch offers different ball sizes without the need to change out the hitch anytime that you need to make a ball change. Additionally, it flips under the truck and hides out of sight when it is not in use. This hitch system is made to accommodate accessories like a draw bar for other towing needs. The draw bar makes it possible to connect other trailers that have pins or have tongues that cannot accommodate a ball. This draw bar is designed with a…

The migrating filaments disappear into the umbra, leaving a bright dot. The evolution of such filamentary structures can be seen in the movie-I (attached as online material). The filament shown in cyan circle initially show a dark striation which develops into a 'Y' shaped and with time it migrates into the umbra, leaving a bright dot. Similarly, the filament indicated by a green circle evolve and disappear. The filament…

In this article, the authors, O’Connor, Lerman, Fritz, & Hodde, are expanding on current research concerning increasing the recycling habits of U.S consumers. First, the reader is informed on current recycling statistics presented by Keep America Beautiful; including how “in 2006, U.S. consumers recycled only 28% of their recyclable waste” (711). Moreover, the authors point out that the increasing popularity of plastic water bottles contributes to the amount of recyclable waste, and how this…