Jumei Tents Co., Ltd.: Find professional geodesic dome tent, arcum tent, polygon tent, pole tent, sports arena tent manufacturers and suppliers in China here. Our factory offers the best customized
... Read more
Encuentre una cinta transportadora de tela confiable de China, una cinta transportadora de cordón de acero, cintas transportadoras especiales, fabricantes y proveedores de cintas transportadoras
... Read more
Компания «Nantong Kunstronger Labour Protective Products Co., Ltd»: Добро пожаловать на оптовую продажу высококачественных, стойких к порезам перчаток, химически стойких перчаток,
... Read more
Good Hardwares es uno de los principales fabricantes de mecanizado CNC, pernos, tuercas, arandelas, pasadores desde hace más de 20 años, especializado en el suministro de productos de alta calidad
... Read more
The zone of proximal development, often abbreviated as ZPD, is the difference between what a learner can do without help, and what they can't do. The concept was introduced, but not fully developed, by psychologist Lev Vygotsky (1896–1934) during the last ten years of his life.