[Q]: Objective: To connect the ears of a teddy bear crochet hat to the hat.
[A]: Use the yarn tails to connect the ears.

[Q]: Objective: Identify your keys
[A]: Use nail polish with different colors to mark and identify your keys

[Q]: Objective: how do you time something?
[A]: keep track of the amount of time that has gone by since started.

[Q]: Objective: How much cardboard would I need to make a pinhole camera?
[A]:
You need to calculate the size of your box based on the dimensions of your photo paper. You can use an online pinhole camera calculator to help you. After you know the box size, you can figure out how much cardboard to use.