Using these plans
- Who it is for. Teachers, parents, club leaders and self-learners. Plans can be shortened or stretched.
- Ages. Written for roughly ages 11 to 16. For younger learners, use more drawing and fewer numbers; for older learners, add the data and sources work.
- Curriculum links. The plans are not matched to any named national programme. Match them to your own curriculum before use.
- Materials. The glossary and the printable summary work well as handouts.
Safety and kindness first
- Fieldwork happens only with a responsible adult, and never alone near water.
- Check a tide table and the weather forecast, go on a falling tide and leave well before it turns. Rock, mud and seaweed can be very slippery and incoming tides can cut off routes.
- Wear sturdy shoes with grip and keep hands clean: wash after touching shore life or mud, and do not eat or drink on the shore.
- Leave animals and plants where you found them. Return turned stones to their original position.
- Never climb on cliffs, stand under cliffs or go near waves that break over rock.
- If a plan uses a shoreline visit and you cannot go, use the classroom variant in the plan.
The five plans
Plan 1: Tide table detective
Goal. Learners read a tide table and discover the daily delay and the spring-neap cycle.
You need. A printed local tide table for one month, graph paper, pencils, a moon phase calendar.
Steps.
- Learners plot the time of every high tide for two weeks.
- They find the pattern: each high tide is about 50 minutes later each day, and then compare it with a moon phase calendar.
- They mark the days with the biggest and smallest ranges and name them spring and neap.
- Ask: if high tide is at 10 am today, about what time will the high tide be four days from now?
How to tell it worked. Learners can predict the next high tide within about an hour and explain why the delay occurs.
Plan 2: Shore transect
Goal. Learners record how life changes in bands from the top of the shore to the bottom.
You need. A measuring tape or marked rope, a notebook, pencils, a hand lens; for the classroom variant, a data sheet made by the teacher from field notes or the tables in the units.
Steps.
- Lay the rope from the highest tide line to the water’s edge.
- Every metre, note the three most common organisms or plants and the substrate.
- Draw a strip map and label each band.
- Back in class, explain the upper and lower limit of each band using ideas from the unit.
How to tell it worked. Learners can name at least three bands and give one physical and one biological reason for the edges.
Plan 3: Build a food web
Goal. Learners see how a food web connects and what happens when one link is removed.
You need. Index cards, a ball of yarn or string, tape, a large open area.
Steps.
- Give each learner a card with an organism: a diatom, copepod, herring, seal, mussel, crab, seabird, and a bacterium.
- Link feeders to their food with yarn, so that each learner holds the yarn to the organisms it eats or is eaten by.
- Remove one organism (for example the herring) and ask the ones connected to it to tug gently.
- Discuss who feels the tug first and who feels it later.
How to tell it worked. Learners can explain a trophic cascade in a sentence and name two organisms with several links.
Plan 4: Erosion in a tray
Goal. Learners model wave erosion and test a simple defence.
You need. A shallow plastic tray, damp sand, small stones, a ruler, water in a jug, a small block of wood to push waves, a camera or sketch pads.
Steps.
- Build a sloping “beach” at one end of the tray and pour a little water in at the other.
- Make steady waves with the block and watch the beach for two minutes.
- Rebuild the beach and add a row of stones as a sea wall, or a line of grass cuttings as plants, and repeat.
- Compare the three results and note what works, what fails, and what the model cannot show.
How to tell it worked. Learners can say what the model shows well (waves move sand) and what it leaves out (tides, size, living plants).
Plan 5: Reef bleaching decision game
Goal. Learners explore how heat, acidity and local pressures combine.
You need. Cards describing pressures (heat wave, runoff, overfishing, anchor damage), a score sheet, dice or numbered cards.
Steps.
- Groups manage an imaginary reef. Each round, a pressure card is drawn and the group must respond.
- Groups can spend a limited number of “action points” on responses, such as reducing runoff or protecting grazing fish.
- Keep the score of reef health over six rounds.
- Discuss which pressures the group could control and which came from outside.
How to tell it worked. Learners can name at least two pressures that a local community can reduce and one that it cannot reduce alone.
Independent projects for students
- Compare two shores or two photographs from a library book and write a one-page comparison.
- Write a short leaflet called “Visiting a tide pool kindly” for a younger class.
- Choose one threat from the notes and trace it from cause to effect in a labelled flow diagram.
- Check one number from the notes against the source list and write down what you found.
A simple way to assess
| Skill | Starting | Secure | Strong |
|---|---|---|---|
| Facts | Names one or two terms | Defines most terms in the unit | Uses terms correctly in new situations |
| Cause and effect | States what happens | Explains why | Connects several causes and effects, and notes limits |
| Evidence | Gives an opinion | Points to a fact in the notes | Names the source and says how sure it is |
| Care for the shore | Knows the safety rules | Follows them in the field | Explains the reason for each rule |
Use the “Check yourself” questions at the end of each unit as a quick quiz, and keep the sources section in mind when learners make claims.
Basis of the facts
Where these facts come from. These are teaching suggestions, not scientific claims. They use only facts stated in the course notes. Safety guidance is general; always follow local rules and the advice of coastal authorities in your area.