How do you introduce the color blue?

Begin teaching your child the basic colors first, such as blue.  Show your child a flash card with the color blue.  Say the color and ask your child to repeat after you.  Have objects near you that are blue so you can point to the flash card and then point to the blue object.  For example, show your child the blue flash card and then show them a blue crayon.  Keep your sessions brief and review colors that your child may already have learned.  Be patient and creative with your child.  Have fun with flash cards and give your child lots of praise as they begin to master these concepts.