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→Notes for teachers
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{|class="wikitable"
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|{{#ev:youtube| fggd74Bt0JY| 150|left}}<br>
|{{#ev:youtube| fggd74Bt0JY|150|left}}<br>
Light Fantastic - BBC Documentary - Part 1/4
Light Fantastic - BBC Documentary - Part 1/4
|{{#ev:youtube| Sz3Egqx7iR0| 150|left}}<br>
|{{#ev:youtube| Sz3Egqx7iR0|150|left}}<br>
Light Fantastic - BBC Documentary - Part 2/4
Light Fantastic - BBC Documentary - Part 2/4
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