To sign build, we will start with our hands in front of us with fingers together and palms facing downward. Place your dominant hand on top of your non-dominant and begin a repetitive movement in which one hand supersedes the other until both hands are right in front of your nose. The movement conveys the act of building a tower.
Build can be used in combination with other toy signs once your baby is starting to sign phrases. For example, build blocks.
If you are getting ready to introduce the sign for build, you can do it using blocks or other building toys like Lego. You can also use the sign at the beach when building a sand castle.