Products that contain bismuth can temporarily turn your tongue black, according to Atlas of Adult Physical Diagnosis. Other Causes If you have a black tongue, then you could have a fungus called Aspergillus niger growing on the surface of your tongue. If you have too much bacteria growing in your mouth, it could cause your tongue to appear black and hairy, according to the Mayo Clinic.
In addition, a child is said to have a cognitive delay and/or a learning disability when they are performing at least two grade levels below their peers. For example, a third grade class is learning their multiplication tables, but a student with a cognitive delay would be performing math on a first grade level.
Definitions of Independent Learning â Initial Overview. The concept of independ ent learning is not new, but is it one on which there is a surprising. lack of consensus as to what it means (Broad, 2006). Independent learning is presented. as something of va lue that is expected to take place at university (Northedge, 2005:19Í¾. Cottrell: 2003:11Í¾ Gow and Kember: 1990 ) yet recent reports highlight the fact that now. undergraduates, âstruggle to cope with the independent and self directed style of learning.