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Seeker

Seeker: Week of 10 28 13: Face Shape Secrets May Lie in 'Junk' Dna

For Students 6th - 8th
Article reports that the secret to differences in face-shape may be found in the non-coding sequences of DNA, also known as "junk" DNA.
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Khan Academy

Khan Academy: Xor Bitwise Operation

For Students 9th - 10th
If you've seen the lesson on the one-time pad, you know that it is the ultimate shift cipher. It involves the application of a random list of shifts equal to the length of the message. It's important to understand exactly how and why the...

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