Insect body structures help with sensing, feeding and breathing. A compound eye contains many light-sensing units, each with a lens; numbers vary among species. Spiracles are openings connected to breathing tubes, not little lungs. The exoskeleton supports the body but must be shed during growth. Safety: No organism handling, dissection, magnified sunlight or electronics work. Stop: Stop at drawing and matching. Do not inspect a real insect under a lens or build a camera.

Materials: Paper; Pencil 1. Draw a schematic insect with head, thorax and abdomen. Add six legs on the thorax, antennae on the head, a patch of small eye units and side dots for spiracles. Label the drawing simplified and not to scale. 2. Copy three feeding cards: leaf-chewing beetle—mandibles bite food; many adult butterflies—coiled proboscis draws up liquid nectar; housefly—sponging mouthparts take up liquids or dissolved food. Match each mouthpart to its stated food. Do not claim that all beetles eat leaves. 3. Write two structure → function sentences, one for the compound eye and one for spiracles. Add a two-panel moult sketch: old rigid covering; larger body expands after shedding before the new covering hardens. Explain why shedding is needed. 4. Copy this real engineering example: researchers made a curved camera array inspired by arthropod compound eyes, using many small lenses and light detectors. Draw a dome with lens dots. Mark one copied design idea and one difference: a manufactured sensor is not a living eye or an insect brain. Done: Keep the labelled anatomy sketch, three feeding matches, two function sentences and camera comparison. Proof: Keep the sketches. Note whether structure names or food matches were read or supplied by an adult. Stop: Stop at drawing and matching. Do not inspect a real insect under a lens or build a camera.