That seemed like a lot - nearly as heavy as her two bags. If air had weight, wouldn’t she feel it?

When she got home, Lakshmi decided to find out. Gowri, her little sister, could help her.

Lakshmi pulled out twelve sticks from the new broom by the kitchen sink. Using a ruler, she made sure each one was 100 cm long. And she

stuck them to make a cube.

Lakshmi and Gowri used the cube as a frame and taped up old newspapers until all its sides were covered.