Hi welcome to the site. You're looking at explaining the type of assessments your setting or work placement chooses to use to support the children's learning & development. Consider how children are involved in their own assessment and with their friends/classmates/peers. What external assessments are used to record developmental progress & by whom and the prefered ones that are used in the setting to observe, track, monitor and assess.
This thread has more detail
http://www.silkysteps.com/forum/showthread.php?t=14832
If it helps with searching, the edexcel Unit 2 is also known as CYP 3.2 xx
Best wishes