Coral reefs

Coral reefs

Four free lessons for ages 8 to 15

Coral reefs cover less than one percent of the ocean floor, yet around a quarter of all known ocean species depend on them, and the Philippines sits at the heart of the Coral Triangle, the richest reef region on Earth. These four lessons build on each other, from what a reef is to what its future depends on, but each one also works on its own.

Ages
8 to 14, and 9 to 15 for lesson 4
Time
About an hour per lesson
Subjects
Science and geography
Hands-on
A virtual dive, an edible polyp, a storm shield experiment and a board game
For ages 14 to 18, try Coral reef ecology
  1. Lesson 1: Welcome to the reef

    What a reef is, why the Philippines sits in the Coral Triangle, and a virtual dive using real dive hand signals, meeting eight animals photographed on our reefs.

    Ages
    8 to 14
    Time
    60 minutes
    You need
    Some space to crouch and stand
    Download the lesson pack (zip, 3.1 MB)
  2. Lesson 2: Amazing polyps

    Meet the tiny animals that build a reef and the algae they live with, match coral shapes and reef types, learn why corals bleach, then build an edible polyp.

    Ages
    8 to 14
    Time
    60 minutes
    You need
    Biscuits, fruit and sprinkles, or clay if you prefer no food
    Download the lesson pack (zip, 1.5 MB)
  3. Lesson 3: Reef neighbours

    How mangroves, seagrass and coral reefs work as a team, with a drawing task, a Venn diagram and a storm shield experiment in a tray of sand.

    Ages
    8 to 14
    Time
    60 to 75 minutes
    You need
    Trays, sand, water and twigs or straws
    Download the lesson pack (zip, 2.5 MB)
  4. Lesson 4: The future of the reef

    Real survey data on how our reefs are doing, what harms and helps them, the Apo Island success story, and the Reef Explorers board game.

    Ages
    9 to 15
    Time
    60 to 75 minutes
    You need
    Dice and counters for the board game
    Download the lesson pack (zip, 3.2 MB)

Bring your students to the reef

We host school groups at our base in Zamboanguita, Negros Oriental, for diving or snorkelling, beach clean-ups and tree planting alongside our conservation team. Every visit follows our child protection policy.

Plan a school expedition

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