Learn Science Or Chemistry Formulas With A Confident Teacher In Front Of A Chalkboard Background 00:06

Name: Learn science or chemistry formulas with a confident teacher in front of a chalkboard background
Uploaded: 2018-06-20 00:00:28
Duration: 6 s
Channel: DenisYakovlev
Description: Learn science or chemistry formulas with a confident teacher in front of a chalkboard background