Goal:
How to make Paper-Mache glue.
Answer:
Pour flour and water in a large bowl and stir it well. Use a whisk or a hand-held blender to remove any remaining lumps. Add more water or flour as necessary until the mix is runny like a white glue, not thick like a paste.

Goal:
How to turn off a smartphone
Answer:
While the smartphone is on, hold the power button down for several seconds, until you are prompted with the power options. Choose the option to turn the phone off.

Goal:
To water proof the wooden product.
Answer:
Brush a coat of polyurethane always brushing with the grain. Let it dry and put 2 additional coats on it.

Goal:
soda can
Answer:
can be crushed with stone