Quick, Hand Me a Water Balloon!

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.

Quick, Hand Me a Water Balloon!

July 22, 2017

A great way to cool off in the summer is to have a water balloon fight. Filling water balloons takes so long, though! The faucet just doesn’t run fast enough, and meanwhile your friends are pegging you with water balloons. Well, a clever dad in super-hot Texas solved that problem. Josh Malone  invented Bunch o Balloons, a plastic doodad with 37 little hoses hanging off it, each with a ready and waiting balloon at the end. You screw the piece onto the end of a garden hose and whoosh, in 20 seconds you have 37 full water balloons. When you pull them off, they close without needing a knot, and you’re ready to fire back at your friends.

Wee ones: Plug a sink, turn on the water, count to 10 and then turn it off. Is the sink more or less than halfway full?

Little kids: If you’re counting off the 20 seconds to fill your 37 water balloons, what numbers do you say? See how high you can go!  Bonus: If you fill the 37 green balloons on Bunch o Balloons plus your own yellow balloon, how many balloons do you have?

Big kids: The dad who invented this thing has 8 kids. If he fills 37 balloons and hands them out as equally as he can to them, what’s the biggest number of balloons any kid can get?  Bonus: If he wants every kid to have at least 10 balloons, how many batches of 37 does he need to fill?

 

 

 

Answers:
Wee ones: Everyone’s sink will be different — but stop running the water early if you’re going to overflow!

Little kids: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20!  Bonus: 38 balloons.

Big kids: 5 balloons. The first 32 will go evenly, with 4 for each kid. Then a few kids will get a 5th balloon.  Bonus: 3 batches. For the 8 kids to have 10 balloons each, he needs at least 80 balloons…and 2 batches, or 74 balloons, won’t be enough.

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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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