A lot of you are probably grappling with how to maintain your instrument at home. Here are some guides and resources to help you out!
Violinists, Violists and Cellists (Pegged Instruments):
If your instrument is REALLY out of tune (requires use of the pegs), you AND your parents should watch the video below before trying to tune the instrument. It is dry but very complete. The same principles work for the cello, but just know that the cello pegs will require more leverage as they are larger and the strings are thicker. You can use a tuning app to help you, or you are welcome to use the recorded pitches below to compare your string's pitch.
It is vital that you NOT exceed the target pitch (go higher than) the pitch the string is designed for as it could result in the string breaking.
Violins are tuned (lowest to highest): G-D-A-E
Violas and Cellos are tuned (lowest to highest): C-G-D-A