Teaching methods, learning materials, and promotion policies may inhibit learning and lead to maladjustments for some children.

There have also been found very old Nepōhualtzintzin attributed to the Olmeca culture, and even some bracelets of Mayan origin, as well as a diversity of forms and materials in other cultures.

Even amorphous materials have some short-range order at the atomic length scale due to the nature of chemical bonding.

However, some of these materials now routinely undergo some extra human processing beyond mere shaping and drilling, such as color enhancement via dyes or irradiation.

It once was generally believed that life and its materials had some essential property or substance distinct from any found in non-living matter, and it was thought that only living beings could produce the molecules of life.

Hemp, cotton, wood, paper, linen, vegetable oils, some types of rope, and rubber are examples of materials made from plants.

These effects are still not yet fully understood ; it is even possible that they also control superconductivity even at low temperatures for some materials.

The Bronze Age is a period characterized by the use of copper and its alloy bronze as the chief hard materials in the manufacture of some implements and weapons.

In some circumstances, mainly depending on the origin and the composition of the raw materials used, the high-temperature calcination process of limestone and clay minerals can release in the atmosphere gases and dust rich in volatile heavy metals, a. o, thallium, cadmium and mercury are the most toxic.

Because some materials have both useful mineral content and recoverable calorific value, the distinction between alternative fuels and raw materials is not always clear.

Preservation and conservation techniques for waterlogged materials such as logboats or structural material were all but non-existent and a number of extremely important finds perished as a result, in some instances dried out for firewood.

Certain soft or elastic materials become hard and brittle at very low temperatures, which makes cryogenic milling ( cryomilling ) an option for some materials that cannot easily be milled at higher temperatures.

Basic materials required for crochet are a hook and some type of material that will be crocheted, most commonly yarn or thread.

In some materials, neighboring atoms actually move away from a vacancy, because they experience attraction from atoms in the surroundings.

The most common materials used for the tools are carbon steel and, in some cases, nickel based alloys.

This is approximately true for most dielectric materials, but not for some other types of material.

Capra's personal papers and some of his film related materials are contained in the Wesleyan University Cinema Archives, which allows scholars and media experts from around the world full access.

Tie-in materials as far-ranging as toys, games, lunch boxes, clothing and so on have all been created and in some cases generate as much or more revenue as the original programming.

* Light travels at speed c / n when not in a vacuum but travelling through a medium with refractive index = n ( causing refraction ), and in some materials other particles can travel faster than c / n ( but still slower than c ), leading to Cherenkov radiation ( see phase velocity below ).

Hexavalent uranium, in the form of the uranyl cation, fluoresces at all concentrations in a yellow green, and is the cause of fluorescence of minerals such as autunite or andersonite, and, at low concentration, is the cause of the fluorescence of such materials as some samples of hyalite opal.

However, the Peace Accords signed in December 1996 provide for the translation of some official documents and voting materials into several indigenous languages ( see summary of main substantive accords ).

Most colored glass used in the art market is manufactured in volume by vendors who serve this market although there are some glass makers with the ability to make their own color from raw materials.

His early poems and some of his prose prolusions speak of wanderings in the city and the neighboring country that may be extended to Cambridge and its surrounding countryside.

One consequence is the occurrence of occasional conflicts because private owners of some inholdings object to public programs of use on neighboring National Forest or other Federal land, or because such ownerships are developed for uses that are not compatible with use for the public of neighboring National Forest land.

Instead, he constantly became lost in parts and components of them, confused some of their details with those of neighboring objects, and so on, unless he allowed time to `` trace '' the object in question through minute movements of the head and hands and in this way to discover its contours.

Yet a crowd came out to see some fresh kids from the city try to match the boys from the neighboring farms ; ;

Pigweed can be a beneficial weed, as well as a companion plant, serving as a trap for leaf miners and some other pests, as well as sheltering ground beetles ( which prey upon insect pests ) and breaking up hard soil for more delicate neighboring plants.

On the seabed off the west coast of the island rests a block of rock 22 km long and 11 km wide, which appears to have slid off the island largely intact at some point in prehistory, similar to the predicted future collapse of Cumbre Vieja, a geological fault on the neighboring island, La Palma.

Shortly after the fall of Kruje's castle, some Albanians fled to neighboring Italy, giving rise to the modern Arbëreshë communities.

Kuwaitis take some pride in the rarity of political violence in their country, especially given the frequently high levels of violence found in neighboring states and elsewhere in the Arab world.

As with some Bantu groups, the Kipsigis and other Nilotes in the Great Lakes region have through interaction adopted many customs and practices from neighboring Southern Cushitic groups, including the age set system of social organization, circumcision, and vocabulary terms.

It is somewhat similar in size and density with neighboring Bali and shares some cultural heritage, but is administratively part of NTB along with sparsely populated Sumbawa.

The isolation created by the mountainous terrain is so great that some groups, until recently, were unaware of the existence of neighboring groups only a few kilometers away.

In the context of this clan based system, local beliefs developed naturally and when assimilation between clans occurred, they also took on some beliefs of the neighboring tribes.

A minor producer of opium, heroin, and marijuana ; major illicit transit point for heroin en route to the international drug market from Burma and Laos ; eradication efforts have reduced the area of cannabis cultivation and shifted some production to neighboring countries ; opium poppy cultivation has been reduced by eradication efforts ; also a drug money-laundering center ; minor role in amphetamine production for regional consumption ; increasing indigenous abuse of methamphetamines and heroin.

Yule or Yuletide (" Yule time ") is a religious festival observed by the historical Germanic peoples and some neighboring peoples, before later being absorbed into, and equated with, the Christian festival of Christmas.

He developed a regular preaching circuit at neighboring churches, in some cases earning a gold dollar per service.

The Los Angeles Community College District ( LACCD ) is the community college district serving Los Angeles, California and some of its neighboring cities.

The mountain people hated the desert environment of San Carlos, and some frequently began to leave the reservation and sometimes raid neighboring settlers.

In some cases, the two nouns are identical in form, with the difference only being marked in neighboring words ( due to gender agreement ; see below ); a Catholic man is un Catholique, while a Catholic woman is une Catholique.

However, some nouns are pronounced differently in their plural forms: for example, œil (" eye ") becomes yeux, cheval (" horse ") becomes chevaux, and os (" bone " or " bones ") is pronounced differently when it is plural () from when it is singular (); and even with nouns for which this is not the case, a distinction will still usually be made in speech, as there will usually be a neighboring article or determiner whose pronunciation does change with the noun's number ( due to number agreement ; see below ).

People of Latin American origin, a number of early Filipino settlers ( notably in Saint Malo, Louisiana ), known as " Manilamen ," from the annual cross-Pacific Galleon or Manila Galleon trade with neighboring Acapulco, Mexico, descendants of African American slaves, and some Cuban Americans have also settled along the Gulf Coast and, in some cases, intermarried into Cajun families.

The majority of Chukchi reside within Chukotka Autonomous Okrug, but some also reside in the neighboring Sakha Republic to the west, Magadan Oblast to the southwest, and Koryak Autonomous Okrug to the south.