Bus-ting Out

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.

Bus-ting Out

March 24, 2017

Whoa — is that bus really running on 2 giant toy batteries? Nope — that’s a trick of the eye. Those batteries are painted on. It’s amazing what you can do with paint if your artwork looks real. On the bus below it, someone painted around the wheels to make them look like eyes. And in the third, the stretchy part of the bus looks like the bendy part of a toothbrush. Buses are a good 40-50 feet long, so these eyes, batteries and brushes are way, way bigger than real ones. How much bigger are they?

Wee ones: How many batteries do you see on the first bus?

Little Kids: If the bus tire is 3 feet wide and the eye painted around it is 5 feet wider, how wide is that eye? Bonus: If your whole body is 4 feet tall, how much longer is that eye than you if you lie down next to it?

Big kids: If the bus toothbrush is 10 feet long and your own toothbrush is just 8 inches, how many inches longer is the bus toothbrush? (Reminder: 1 foot has 12 inches.) Bonus: If the 2 eyes together stretch across 20 feet of the bus, and your own eyes span just 6 inches of your face, how many times as wide is the bus’s “face”?

 

Answers:
Wee ones: 2 batteries.

Little kids: 8 feet wide. Bonus: 4 feet longer.

Big kids: 112 inches longer, since the big toothbrush is 120 inches long. Bonus: 40 times as wide!

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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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