Idont have a sewing machine so . much appreciated.

Importance of Proper Threading
Threading your sewing machine correctly is necessary to achieve secure and attractive stitches. Although sewing machines come in different sizes and models, the mechanism for making a stitch on a home sewing machine is basically the same—it makes stitches by combining the needle thread with a second thread coming from the bobbin.

Threading a sewing machine is an easy process that takes less than five minutes.

Threading a Sewing Machine
If your machine is electric, unplug it before starting. You can still work your machine, but it won't get ahead of you.

Place the presser foot in the upward position. Put a spool of thread on the spool holder. Traveling from the spool holder across the top of the machine, look for a minimum of one thread guide. Insert the thread in the thread guide(s).
Now look for a tension mechanism. Bring the thread downward to the tension mechanism, slip the thread between the metal disks of the tension mechanism and travel back upward with the thread.
Look for a take-up mechanism. This is the area on the front of the machine which will go up and down when you turn the hand wheel. Place the thread through the take-up lever. Some machines are set up so the thread will slide into this while others require you to place the thread through a hole. The thread will now go downward on the left side of the take-up lever.

Locate and thread any thread guides, leading down to the sewing machine needle.
Thread the sewing machine needle. For best results, hold the thread with your left hand and turn the hand wheel.
Watch for any thread to flap around. If this happens, you have probably missed a thread guide

Tips
For best result, follow these helpful hints. You'll soon be sewing like a pro.

Always thoroughly clean and oil any machine before running it.
Always start sewing slowly to test your machine threading. Practice on samples or scraps to try a simple straight seam.
Use good quality thread to prevent excess lint in the machine.
If your stitching is uneven, that means the tension needs an adjustment.
Change the sewing machine needle regularly.
Start with simple projects and focus on learning and mastering your machine's speed and settings.

here is your answer this is the full method hoppeee it help you. :-) :-)

Is it even part of math