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CTR March 2021
Vol. 29 No. 1 Issue 244
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Free Apps That Can Steal a Childhood; Math Apps for the Pandemic Slide plus 21 New Reviews

“Dare mighty things.” The message coded in binary on a parachute by Ian Clark — a NASA Perseverance engineer. MARS IS COOL The easter egg style message printed in binary code on the Perseverance parachute (“Dare mighty things.” ) was excerpted from a larger quote by Teddy Roosevelt, ...