Students in a 5th grade class were introduced to arthropods like spiders and asked about their initial thoughts. The students came up with observations like them being creepy or hairy. They then generated questions about how arthropods move or produce webs. The teacher used a thinking routine called "think-puzzle-explore" to have students share what they think, identify questions, and explore topics that may not seem complex. Visible thinking involves making thinking visible through speaking, writing or drawing so students can direct and improve their thoughts. It emphasizes documenting thinking for later reflection.