A Try-It-at-Home-With-the-Kids Math Tip: Measure your street with a bicycle
You have probably seen some very serious people rolling a single wheel across the street. They surely could not be suspected as clowning around on a unicycle. They are measuring the length of a road in this very cool way, and you can try it too. Even if you do not have a unicycle. And even if you can’t ride a bicycle, as some of the people I know (sorry, mom). Just roll something with wheels next to you.

Get on your bicycle and count how many pedal rounds does it take to move from one side of the road to the next. Let’s say that it takes 12 pedal rotations to reach the end of your street.
Next, we need to find how much our bicycle travels with each pedal rotation. The easiest is to just mark with a chalk on a road the start and end point of a pedal rotation. Say, your bicycle moves 3 feet while you are doing one full pedal rotation. So, the length of your road is: 12 pedal rotations x 3 feet each = 36 feet.
Notice how many energetic pedal rotations your kid needs to make on his little bicycle to move these 36 feet. For your 12 rotations, he is probably making 36. So, he works 3 times harder than you, which explains why she is so tired after going around the block. Or, perhaps he was just bored and now that you can give him a real assignment of measuring the perimeter of the block, it will get surprisingly more interesting.

Latest Family Puzzle:
You are going for a business lunch with representatives of a company where many employees are known to be liars. Hungry and desperate to get an advice on what to order, you bluntly ask all three of them if they are liars.
The first one says, "All three of us are always telling the truth."
The second says, "No, only one of us is truthful."
The third answers, "The second man is telling the truth."
Well, whom can you trust from these three people?
Click to submit or read the answer.
Forward this to your friend if you like it.
Read more cool, fun and non-intimidating math stories, tips and puzzles at www.TheMathMom.com
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