Длинная рамка Математическая задача. Доска. Молодая девушка-подросток. Он решает задачу, стоящую перед школьным советом. Я пишу мелом на доске.. - Стоковое фото и изображение

Long frame. Mathematical task. Blackboard. Young teenage girl. He solves the task standing at the school board. I write with chalk on the blackboard.

Mathematical task. Blackboard. Young teenage girl. He solves the task standing at the school board. I write with chalk on the blackboard.

Teacher hand writing formulas on blackboard background

Back view of schoolboy writing with chalk on blackboard

Close up of a hand writing on a blackboard

Schoolgirl thinks on the difficult task of mathematics on blackboard

He writes on the chalkboard with chalk. Math problem. A girl at the chalkboard.

He writes on the chalkboard with chalk. Math problem. A girl at the chalkboard.

He writes on the chalkboard with chalk. Math problem. A girl at the chalkboard. Oblong banner.

He writes on the chalkboard with chalk. Math problem. A girl at the chalkboard.

He writes on the chalkboard with chalk. Math problem. A girl at the chalkboard.

He writes on the chalkboard with chalk. Math problem. A girl at the chalkboard.

Schoolgirl at the blackboard. Shows the results of math problems. Addition and multiplication of numbers.