A Wonderleaf question

a real page from the book
A pencil writes because its graphite is soft enough for rough paper fibers to scrape off tiny flakes. Those dark bits catch on the page, leaving a line wherever your hand moves the point. Pressing harder leaves more graphite behind.
The material is not lead; it is carbon arranged in thin slippery layers. That is also why erasers help: their rubber grips many loose specks and lifts them away, so a mistake can fade instead of soaking into the paper.
Draw one line softly and one line firmly, then rub both with an eraser and compare what remains.
Watercolour scenes, straight answers, about three minutes cover to cover.
Open the picture bookOne more wonder: Why is space so dark?
Ask anything โ Wonderleaf writes and illustrates a picture book for it. That's the whole idea.
Ask your own questionA new question goes up every Sunday evening. We email it to you Monday morning, free to read that week.
One wonder a week, nothing else, ever. Unsubscribe in one click.