The zone of proximal development, often abbreviated as ZPD, is the difference between what a learner can do without help and what he or she cannot do. It is a concept introduced, yet not fully developed, by Soviet psychologist Lev Vygotsky (1896â1934) during the last ten years of his life.
Report Abuse. 1  Baguio City Elevation. 2  The city is at an altitude of approximately 1500 meters (5100 ft) in a moist tropical pine forest conducive to the growth of mossy plants and orchids. 3  It is over 5,00Today: Cloudy with showers.  try yahoo weather.
Extending 13 miles (21 km) from north to south and 7 miles (11 km) from east to west, it is pear-shaped. Its surface elevation was long given as 686 feet (209 metres) below sea level, but for decades the annual water level generally has been 6.5 to 13 feet (2 to 4 metres) below the traditional level.