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On this date in 1976 the Viking 2 spacecraft lands at Utopia Planitia on Mars takes the first close-up, color photos of the planet's surface.

Have students write "Easy", "OK", or "Hard" on their papers as feed back to you as to how they found the material.

The sticky side of a post-it note is great for cleaning out the dust in a computer keyboard. Just slide it between the keys.

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