The Mathematician and the Three Lost Men

Three men are in a hot-air balloon.  Soon, they find themselves lost in a canyon somewhere.  One of the three men says, “I’ve got an idea. We can call for help in this canyon and the echo will carry our voices to the end of the canyon. Someone’s bound to hear us by then!”

So he leans over the basket and screams out, “Helllloooooo! Where are we?”

(They hear the echo several times).

MOTEGI Hot Air Balloon International Campionship

Fifteen minutes later, they hear this echoing voice: “Helllloooooo! You’re lost!” The shouter comments, “That must have been a mathematician.” Puzzled, his friend asks, “Why do you say that?”

“For three reasons. First, he took a long time to answer, second, he was absolutely correct, and, third, his answer was absolutely useless.”

Source: Math 2.0 Forum (Please inform me if you know the original author.)

Multiplication Fun with Wings iPad App

Wings is a simple and fun iPad app developed to improve multiplication skills  of people ages four and above. The most basic levels are dots, while more difficult multiplication problems are stored for older players.

Wings iPad App

The game is simple. Your bird has lost its nest and colored wings. You have to help it fly across different islands to help build its nest and regain its colored feathers. As you fly, you will solve multiplication problems. You have to tilt the iPad so that your bird passes through the larger number. » Read more

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