Deep Dive

Here's your nightly math! Just 5 quick minutes of number fun for kids and parents at home. Read a cool fun fact, followed by math riddles at different levels so everyone can jump in. Your kids will love you for it.

Deep Dive

September 27, 2014

On Thursday we talked about breaking world records, and somebody set an amazing one this week: Ahmed Gabr, a 41-year-old Egyptian man, broke the record for the deepest SCUBA dive, swimming down to an incredible 1,090 feet 4 1/2 inches deep in the Red Sea. SCUBA, which stands for Self-Contained Underwater Breathing Apparatus, means swimming in an airtight suit attached to an air tank, so you can breathe and stay underwater for a long time. SCUBA diving lets people swim very deep to see exotic fish, look for sunken ships, and take cool photos with waterproof cameras. The water pressure gets stronger the deeper you go, though, which can change the chemicals in your blood in dangerous ways. So you have to swim back up very slowly: Ahmed took only 12 minutes to swim down but almost 15 hours to swim back up! We’re glad to have him back up here, and we’re wondering whether he’ll try to break the record again.

Wee ones: If you counted the minutes as Ahmed swam down, what numbers would you say to get to 12?

Little kids: Ahmed trained extra hard for 4 years for this big moment. In what year did he start training? (Reminder: We’re in 2014 right now.)  Bonus: Ahmed is 41 years old. How old was he when he started training?

Big kids: Ahmed’s amazing dive broke the earlier record of 1,044 ft. How much deeper did Ahmed’s 1,090 foot dive go?  Bonus: How many times as long was his 15-hour trip back up to the surface compared to his 12-minute dive down? (Reminder: An hour has 60 minutes.)




Wee ones: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.

Little kids: In 2010.  Bonus: 37 years old.

Big kids: 46 feet deeper.  Bonus: 75 times as long, since each hour has 5 12-minute chunks.

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About the Author

Laura Overdeck

Laura Overdeck

Laura Bilodeau Overdeck is founder and president of Bedtime Math Foundation. Her goal is to make math as playful for kids as it was for her when she was a child. Her mom had Laura baking before she could walk, and her dad had her using power tools at a very unsafe age, measuring lengths, widths and angles in the process. Armed with this early love of numbers, Laura went on to get a BA in astrophysics from Princeton University, and an MBA from the Wharton School of Business; she continues to star-gaze today. Laura’s other interests include her three lively children, chocolate, extreme vehicles, and Lego Mindstorms.

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