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Crumpled paper balls flying at frightened female teacher in classroom with chalkboard on background

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Exercises to maintain vivacity. Work far beyond actual school day. Stretch and do exercises to increase vivacity and get energy charge. Teacher woman sit table classroom chalkboard background.

Male teacher in formal wear wiping mathematical equations with sponge in classroom

Crumpled paper balls flying at frightened male teacher in classroom with chalkboard on background

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Male teacher wiping mathematical equations with sponge from chalkboard in classroom

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Crumpled paper balls flying at frightened male teacher in classroom with chalkboard on background

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