This cube for (a + b)3 provides the basis necessary for the sensorial construction of higher powers of the same binomial: (a + b)4 and (a + b)5. Contained in a hinged wooden box...
Sight is a complex function of the brain that extends from the front to the back of the head. The last part of the brain involved in sight is the visual cortex, where sensory...
These Blindfolds have a comfortable opening for the nose and a Velcro™ fastener so the child may put it on without assistance. Includes a red, orange, green and blue blindfold.