Spotted on Halloween

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.

Spotted on Halloween

October 27, 2017

With Halloween just a few days away, lots of us have decorated our homes for the big day. And if you’re a little creeped out by all those giant spiders and webs on people’s bushes — even though you know 3-foot-wide spiders probably aren’t real — you can try something a little less yucky and a little more colorful. We’re loving this idea from the Momma Owl’s Lab blog: Take a paper towel tube, punch little holes in it with a holepuncher, then stick a handful of glowsticks inside — those glowsticks you normally connect end to end to make a glowing bracelet or headband for yourself. Then take your polka-dotted decorations outside and put them on top of your bushes. Of course, that doesn’t stop you from putting out big spiders and webs with them, but if you’d rather not freak yourself out while decorating, the glowsticks might be the ticket. Just remember, glowsticks last only a few hours once you snap them, so you’ll have to wait till Halloween itself!

Wee ones: How many glowsticks outside the tube can you see in the picture?

Little kids: If you grab 5 orange glowsticks and 4 yellow ones, how many do you have?  Bonus: If you took those glowsticks from a pack of 50, how many are left in there to make glow-in-the-dark bracelets?

Big kids: If you punch 7 holes in each paper tube (all on one side so you can see them all), how many glowing spots can you get by filling 8 tubes with glowsticks? (Hint if needed: Multiplying by 8 is like doubling a number 3 times in a row.)  Bonus: If a real spider is normally just 1/2 inch wide and the big decoration ones are 26 times as wide, how wide is the fake spider?

 

 

 

Answers:
Wee ones: 4 glowsticks.

Little kids: 9 glowsticks.  Bonus: 41 glowsticks.

Big kids: 56 spots.  Bonus: 13 inches.

And thank you to blogger Rachel Ford for this great idea!

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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 while still in diapers, 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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