Watch this segment of Taare Zameen Par.

Then check these Calvin & Hobbes strips.

A small red spacecraft breaks through the cloud cover of Mysterio system planet 6! At the controls, it's none other than our fearless hero, Spaceman Spiff! Piloting over the lifeless world, he reflects on his unusual mission... QUIZ 1. 6+5= ... to somehoe crash planets 6 and 5 together!

In a scientific mission to discover what happens when two planets collide, Spaceman Spiff drops anchor! The anchor catches on a hillside! Spiff downshifts and guns the motor! Imperceptibly at first, the planet slowly moves, towed along by our hero, until... ...breaking orbit, planet 6 picks up speed, hurling towards planet 5!

Pulled by Spaceman Spiff, planet 6 is about to collide with planet 5! With no time to lose, our hero cuts loose the anchor and flies to safety! The planets crash, grinding and shattering with awful force! Planet 5, being smaller, is crunched to dust! Only 6 remains! 6+5=6. Time! Pass your papers forward. TIME?! I just finished the first problem!

Bless them both -- Aamir and Bill.