Vocabulary & Critical Thinking Worksheets | Grade 1–2 | Nighttime & Stars Theme Spark curiosity about the night sky! This full-color Nighttime & Stars Odd One Out worksheet set is wonderful for a science unit on space, light, or nocturnal animals. 📋 How it works: Each page has 6 groups. Each group shows 4 colorful pictures. Three pictures belong to the same category — one does NOT belong. Students circle the odd one out, then write WHY on the line below. ✨ Groups include: Things in the sky