Drawing a chalk circle on board

Drawing a circle on chalkboard

Drawing a chalk circle

Scribbling on a chalkboard

Writing on a chalkboard

Writing on a blackboard

Drawing on chalkboard

Drawing on blackboard

Scribbling on blackboard

Scribbling on chalkboard

Chalk writing on chalkboard

Chalk writing on chalkboard

Writing with a marker pen (Loop)

Drawing with a marker pen (Loop)

Drawing line with marker pen (Short)

Drawing line with marker pen (Medium)

Drawing line with marker pen (Long)

Crossing mistake out with marker pen

Drawing a line with pencil

Drawing line with a pencil

Drawing lines with a pencil