Are wooden pencils bad for the environment?

Wood pencils require less energy to manufacture, but don't last as long as their mechanical cousins. The trees necessary to make the pencils are technically a renewable resource, but how they're harvested can have a big impact on the environment. ... Unlike mechanical pencils, wooden pencils quickly degrade.

yes and no. The way they are made is efficient and in a way renewable over time. So that's the only disadvantage. Unlike the other styles of pencils they can degrade because their shell isn't made out of a non degradable source.

are you referring to matrix mathematics!