Lots of pencils are painted yellow, a tradition that began long ago.
Pencil makers chose bright yellow to show their pencils were special, and many are still yellow today.
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A pencil writes with a soft grey material called graphite, not lead.
An eraser makes tiny crumbs that lift pencil marks right off the paper.
Most pencils have six flat sides so they don't roll off the desk.
Paper is made from trees that are turned into soft, mushy pulp.
Crayons are made from colored wax that can melt if it gets too warm.