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more than 2 hours


On the history of communication technology

3.166665
Average: 3.2 (6 votes)
Given Metadata

Generation of energy from water power

3.4
Average: 3.4 (5 votes)
Given Metadata

The states of matter

4.5
Average: 4.5 (2 votes)
Given Metadata

Το εκκρεμές του Φουκώ (για την 5η δημοτικού)

4.333335
Average: 4.3 (6 votes)
Given Metadata

The electromagnetic spectrum

4.666665
Average: 4.7 (12 votes)
Given Metadata

Το εκκρεμές του Φουκώ

4.30769
Average: 4.3 (13 votes)
Given Metadata

Pathway of Light and Colour

4.25
Average: 4.3 (8 votes)
Given Metadata

Foucault's pendulum

4.214285
Average: 4.2 (14 votes)
Given Metadata

Foucault's Pendulum

4.625
Average: 4.6 (8 votes)
Given Metadata