This is a sentence that has the missing verb in it. Verbs are part of speech that is used when we are describing an action, state or occurrence.
The word ''ride'' is an irregular verb and it is considering controlling the movement. In that way, Sara and Jane are controlling their bikes riding them to school every day. In this sentence, bike is used as their transport to school.
This verb can be used in, for example, ride a car, ride a horse, ride a bike and more.
Well i can't really say it because its your oppinion but I would say that its Nice to educate young children because you get to see them learn and your their motivation. I turn to my parents because I can talk more freely to them and I can understand it a lot better.