At what age should a child be able to recognize basic colours??
I have a child at my daycare who is behind the other kids in many ways. The most recent thing we recognized is her ability to recognize and repeat back colours. She is unable to do it at all with any colours. We tried helping her recognize a colour that she will see everyday, like the colour of her coat. From one second to the next she is unable to remember and repeat back the colour. Should we be concerned??
As you may already know from your daycare experience, every child develops at his or her own pace. Have you discussed your observations with the child's parents yet? If they shared your concern about their child's cognitive development, they could then discuss the matter with the child's pediatrician to explore specific recommendations for this child.
Additionally, here are some resources on Education.com you might find helpful (based on assumption that child is less than 6 years old) ...
1.) Cognitive Development: By the End of 3, 4, and 5 Years -- http://www.education.com/reference/article/Ref_Cognitive_End_3_4_5/
In this article by the U.S. Department of Health and Human Services' Centers for Disease Control, they suggest as a typical milestone that by the end of 4 years (48 months), a child can correctly name some colors.
Note: If the child's age isn't a match with these resources, you can browse Education.com by a specific age or grade (see left-hand column of homepage), or peruse the "Activities" or "Worksheets" sections (see tabs at top of homepage) to find more age/grade-appropriate activities for this child.