导师和自由作家。科学教师和散文情人。第一次综述:2020 |圣罗斯玛丽机构©2010-2021 |创造性的公共4.0

聚丙烯:性质,用途,危险

Physical Properties Amorphous Density: 0.85 g/cm3 [1] Crystalline Density: 0.95 g/cm3 [2] Melting Point of 320°F (160°C) Doesn’t Soak up water (good for uses around moisture) Chemical Properties Very strong against corrosion; doesn’t react with chemicals like alkaline substances, acids, etc. Low flammability Poor UV resistance Structural Formula Functional Groups Polypropylene contains a carbon backbone…

心理学理论家:Lev Vygotsky,Robert Coles,Carol Gilligan

Lev Vygotsky (1896 – 1934) Vygotsky’s basic premise was that social interaction plays an important role in intellectual development The child’s development appears twice – first on the social level, then on an individual level He believed skills develop to a higher level with adult guidance or peer collaboration (social interaction) His theory attempts to…

社会学习理论:Albert Bandura(1925-)

Canadian, born in northern Alberta Behaviourism theory of the time stated that one’s environment causes one’s behaviour Bandura agreed that environment causes behaviour, but he also believed that behaviour causes environment – he labelled this “reciprocal determinism” – that the world and a person’s behaviour cause each other He studied personality as it interacted with…