A girl from the back is engaged in mental arithmetic on the abacus online on a laptop, chroma key background. The concept of teaching children to count quickly, Russian mathematics.

Name: Girl Back Engaged Mental Arithmetic On
Uploaded: 2024-01-01T00:00:00.000Z
Duration: 27 s
Channel: Petrovicheva Mariia
Description: A girl from the back is engaged in mental arithmetic on the abacus online on a laptop, chroma key background. The concept of teaching children to count quickly, Russian mathematics. Stock Footage Video (100% Royalty-free) 3396606455 | Shutterstock