Goal:
To cut a stalk of bamboo to a smaller size, you can
Answer:
Use a power saw of some kind

Goal:
To make the white of the eyes appear black
Answer:
Using your fingers place black sclera contact lens into the eyes

Goal:
Make a yo yo
Answer:
Tie a string around the center of two rubber balls that are connected together and glue it in place. Dry and use as a yo yo

Goal:
How to use a slingshot
Answer:
Place a rock or marble in the leather strip of a sling shot. Clench the rock or marble with the leather and pull back while aiming. Release the rock or marble.