Baseball bat and glasses: what they have in common

1. Step 1. Baseball bat — has part — Handle. A thin handle.
2. Step 2. Handle — is part of — Toothbrush. A plastic handle.
3. Step 3. Toothbrush — is made of — Bone. Addis’s toothbrush has a bone handle.
4. Step 4. Bone — is material for — Spectacle frame. The first frames were made of bone and horn.
5. Step 5. Spectacle frame — is part of — Glasses. A frame.

Open Evothings