A day without synthetic materials would be different, you would have to go from living in something on the left to living in something on the right. You would also have to sleep in an all natural bed, eat an all natural breakfast, and have to go to school in an all natural vehicle, such as a horse or a wagon. Synthetic means: A man-made material that acts like its natural counterpart.
The school would be older looking, and there wouldn't be any computers or marker boards, there would be chalk boards and lots of paper. You would also have to bring your own lunch most likely.
And your family dinner might look like this, as you wouldn't have a stove to cook on, or gas to heat it.