Education
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Education free stock photo
Chalk brushes.
Free high resolution images education, writing, science, mathematical, mathematics, number.
Licence:
Non-Commercial. You can use this work for non-commercial, personal and educational purposes, but you must specify the source.
Tags:
Objects writing science mathematical mathematics number physics plus problem research school sign black solution study studying symbols teach teacher theory university white write math line lesson concept blackboard brush calculate chalk chalkboard class classroom college complex complicated dirty lecture drawing education equation exam formula high intelligent knowledge learn symbol pattern illustration background
Camera: Canon (Canon EOS 5D Mark III)
ISO: 250
Aperture: f/4.5
More free photos / by Geoffrey Whiteway