in need of a theory help

[sunshine]

i have been trying to look for a theorist to link into my unit 411 reflective account on PSRN i have done a size activity and just cant seem to find a theorist that links in i thought piaget might work but cant really seem to find the right info can anyone help me please its the last thing ive got to do to finish the unit please ......................

Bruner - scaffolding learning?
Vygotsky - suggested that when a child is in a learning environment they learn best when the material to be learnt is within their grasp, and just beyond what they already know. Vygotsky is known for the Zone of proximal development (ZPD) (the difference between what a learner can do without help and what he or she can do with help).
Frobel - introduction of finger rhymes

Are they any good?????