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    Rulebook Reef

    Year 1 Yes or No Rules

    Test things against a rule the way a computer does: yes or no. Then join two rules with AND, OR and NOT.

    • Ages 5–7
    • 3 quests
    • Beginner → Getting stronger → Challenge

    Computers make decisions by checking rules that are either true or false — yes or no, with nothing in between. On Rulebook Reef, Year 1 coders play the robot: they test each picture against a rule and decide whether it fits.

    What your child will learn

    • Decide whether something fits a rule: yes or no
    • Find the one thing that breaks a rule
    • Use AND: both parts must be true
    • Use OR and NOT in simple rules

    Both, either, or not

    “Red AND a fruit” is fussy: a red car is out, and so is a yellow banana — only something that is both will do. “A fruit OR a vegetable” is easy-going: either is fine. “NOT red” turns the rule round and keeps everything except the red things.

    Example questions

    Here are a few questions like the ones in the first quest. Can you solve them?

    1. 1. A rule says “only yellow things”. Which one breaks the rule?

      • 🐥 yellow chick
      • 🍌 yellow banana
      • 🍓 red strawberry
      • 🌻 yellow sunflower
      Show answer

      Answer: 🍓 red strawberry. The strawberry is red, not yellow.

    2. 2. The rule is “it is alive”. Does a 🚗 car fit the rule?

      • No
      • Yes
      Show answer

      Answer: No. A car is a machine, so the answer is no.

    3. 3. The rule is “it is an animal”. Does a 🐟 fish fit the rule?

      • Yes
      • No
      Show answer

      Answer: Yes. A fish is an animal, so the answer is yes.

    Tips for grown-ups

    • Play “robot sorter” with toys: “Give me everything that is blue AND has wheels.”
    • At tidy-up time, sort by a rule and let your child guess the rule.
    • Ask yes-or-no questions only, as in “Guess Who?”