Teacher erases algebra formula from chalkboard Clip Length 00:00:11 Frame Rate 30 Download Options HD Mp4 Join now to download Categories Education Keywords handwriting hold penmanship indoors inside interior letters board closeup white hand chalk concept education word message sign presentation communication subject course topic text learning academic math teach mathematical number calculate equation delete clean off remove
Sequenced Hand of caucasian teacher writes algebra formulas on chalkboard Education Join now to download
Young female college professor wearing cloth face mask teaching math class in university classroom Education Coronavirus Join now to download
Sequenced Teacher uses black marker to write math equation on whiteboard Education Join now to download