• Quick retrieval from earlier learning (Why we need light to see things). Students answer on mini whiteboards.
• Show answers together and note who needs support in the main task.

1. You go into a room with no windows and shut the door. The light is off. What can you see? (only shiny things / everything, but in black and white / nothing at all / only red things) → nothing at allPrompt: What is missing from the room?
2. True or false? Our eyes shine light onto things so we can see them. (True / False) → FalsePrompt: Where does the light start, and where must it end?
3. What does a torch (flashlight) do in a dark cave? (It gives out light that bounces off the walls so we can see them. / It makes the walls give out light. / It makes our eyes stronger. / It makes the cave warmer, so we see better.) → It gives out light that bounces off the walls so we can see them.Prompt: Where does the light start, and where does it end up?

• Ask the class to make a wave with a rope or slinky and describe what moves and what doesn't.
• Share the objective: Dark means no light; protect your eyes from the Sun. Read the success criteria together.

• Work through the example out loud, saying why you do each step, not just what you do.
• Example: Why do sunglasses with UV protection help your eyes on a bright day?
• Step 1: UV-blocking lenses protect eyes from damage over time.
• Step 2: So the answer is: They block harmful ultraviolet light and reduce glare.
• Answer: They block harmful ultraviolet light and reduce glare.
• Pause after each step and ask a student to say what comes next.

• Do these together. Students try each step on whiteboards before you reveal it.
• Use the hints as prompts rather than giving the answer.

1. Why do sunglasses with UV protection help your eyes on a bright day? (They let in more light. / They make the Sun bigger. / They make you see in the dark. / They block harmful ultraviolet light and reduce glare.) → They block harmful ultraviolet light and reduce glare.Prompt: UV is light we cannot see that can still harm eyes and skin.
2. True or false? We need light to see; in total darkness we see nothing. (True / False) → TruePrompt: Think about how light reaches eyes and skin.

• Students work on the student sheet. Circulate and check the first two answers of every student early.
• Students who finish: write a question of their own for a partner, with the answer.

The 6 questions are on the student sheet below, with answers in the key.

• Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.

1. Is this safe or unsafe in strong sunlight: staying in strong sun all day without cover? (safe / unsafe) → unsafePrompt: Does it protect your eyes and skin, or expose them?
2. Why must you never look straight at the Sun, even with sunglasses? (Its light is strong enough to permanently damage your eyes. / It makes the Sun go out. / It makes the Sun angry. / The Sun is too far away to see.) → Its light is strong enough to permanently damage your eyes.Prompt: Sunglasses reduce glare but are not made for staring at the Sun.

Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-3.