Tag Archives: Sleep
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Siffre’s Cave Experiments (Upper-Intermediate Lesson)
A lesson on Michel Siffre’s isolation experiment and the science of time perception. Includes vocabulary and speaking tasks for B2/C1 ESL. -
Siffre’s Cave Experiments (Advanced Lesson)
A lesson on Michel Siffre’s isolation experiment and the science of time perception. Includes vocabulary, speaking tasks for C1/C2 ESL.