Monday 15 April 2013

Do you Understand the Size of the Universe?

Cockroaches and Ladybugs: Do you Understand the Size of the Universe?

Several weeks ago, I was surfing the net looking for some resources to explain the size of the Universe. This is a really tough topic, specially when the learners are above 10 and you need some "interactive help" to answer this difficult question in English as a Second Language!

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