You can keep the red, yellow, and green help monsters in a strip on desks. Students can place a small object on the appropriate help monster while working.
The help monsters can be cut into three pieces and students can keep them inside their desks. They can place one monster at a time on their desk to display the status of what kind of help is needed.
These monsters are intended to help the teacher recognize which students need help without students getting out of their seats or shouting out.