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Isolated blackboard with periodic table, Thallium, Chemistry
lettering. using chalk. lettering art on black panel. woman artist.
education. Back to school concept over blackboard background. top view, flat lay
One female scientist and her colleague starting their ordinary day at the laboratory where they grow mushrooms
Химический элемент франций с серийным номером из таблицы Менделеева. Рисунок мелом.
Two students doing math at the whiteboard, Istanbul, Turkey. Young woman talking, male student listening. Nikon D3x, full frame. High ISO, selective focus.
Maths problem at a rather run-down green-board, written in chalk
Teacher requesting a break in classroom.
Smart teacher checking cute student homework while explaining idea at class. Attractive instructor walking around classroom while looking at notebook and talking about Math theory to child. Pedagogy.
Group of young people in technical vocational training with teacher
mathematics concept - the number pi on a small slate blackboard, isolated on white
Chemical formula on blackboard in classroom or laboratory.
Math teacher giving a Math lesson to his students and using a ruler
Frame made of school blackboard with chalk traces and binary code. Can illustrate the concept of online education - distance learning, distance education, e-learning, online learning. Space for copy.
White color chalk hand writing in word SWOT (abbreviation of strength, weakness, opportunities, threats) and graph on black board texture background
Math formula on blackboard
Cheerful Indian Girl Student with her Teacher showing Parts of Flowers Chalk Drawing done by her and getting appreciation from the Teacher
Set of Roman numerals (numbers) and arabic numbers 1 to 0 handwritten in white chalk on a blackboard background. Concept of education and learning.
Chalkboard with many different math formulas on white wall
Mathematical formula on blackboard
Happy diverse group of art students, some with Down syndrome, posing together.
Close-up of hand-written Pi numbers on green chalkboard. Focus on the blackboard.
Close up of maths equations on a school whiteboard
back to school in attendance
Professor teaching on blackboard
One female scientist and her colleague starting their ordinary day at the laboratory where they grow mushrooms
Basic parallelogram area formulas written on chalkboard
Chalk board
Химический элемент бор  с серийным номером из таблицы Менделеева. Рисунок мелом.
Students with their teacher in the classroom
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