Bars and Tombolos

Overview

Year Group: 9
Duration: 50 minutes
Class Size: 5 students
Unit: Exploring Earth's Features (Lesson 7 of 30)
National Curriculum Link:

Geography Key Stage 3
Locational knowledge: physical processes shaping landscapes (coastal features)
Geographical skills: use of fieldwork and maps to describe physical features and processes
Understanding physical geography: coastal processes and landforms

Learning Objectives

By the end of this lesson, students will be able to:

Define what bars and tombolos are, describing their key features.
Explain the formation processes of bars and tombolos using coastal geography terminology such as longshore drift, deposition, and wave refraction.
Evaluate the importance of bars and tombolos to coastal geography and human activity (e.g. habitats, tourism, coastal protection).
Analyse a simple illustrated case study to identify bars and tombolos on a map and diagram.

National Curriculum Reference:

“Understand the formation of distinctive UK and global coastal landscapes, including coastal erosion, transportation and deposition landforms” (Programme of Study: Geography KS3, Physical Geography).
“Use maps, atlases, and digital/computer mapping to locate and describe physical features” (Geographical skills and fieldwork).

Resources Needed

Whiteboard and markers
Large printed diagrams showing cross-sections and aerial views of bars and tombolos
Mini sand tray and water tray for demonstration of wave action and sediment deposition
Individual student workbooks with worksheet (includes diagrams, key vocabulary, and blank maps)
Set of coastal maps showing examples of bars and tombolos (e.g., Chesil Beach, Studland Bay)
Stopwatch and timer
Coloured pencils and ruler for mapwork

Lesson Outline

Starter (5 minutes)

Objective: Engage interest and activate prior knowledge

Begin with a quick, interactive quiz: “What are some coastal landforms you know?” Write answers on the whiteboard.
Brief recap of previous lessons on coastal processes (erosion, transportation).
Introduce today’s focus on “bars and tombolos” with a simple question: “What do you think these features look like, and why do they matter?”

Introduction & Explanation (10 minutes)

Objective: Understand definitions and formation processes

Use large diagrams to explain:
- Definition of a bar: submerged or partly exposed ridge of sand or shingle connecting two headlands or forming across a bay.
- Definition of a tombolo: a sand or shingle bar that connects an island to the mainland or another island.
Teach key coastal processes involved:
- Longshore drift transports sediment along the coast.
- Wave refraction deposits sediment in sheltered areas.
Use the sand and water tray to demonstrate sediment movement and deposition shaping bars/tombolos. Encourage students to predict next shapes formed.

Guided Activity (15 minutes)

Objective: Apply knowledge through mapwork and diagram annotation

Hand out worksheets with an annotated map of Chesil Beach (example of a bar) and Studland Bay tombolo.
Students work individually or in pairs to:
- Identify bars and tombolos on the maps.
- Colour-code sediment deposits and migration directions.
- Label parts of the diagrams including headlands, bays, sediment direction arrows.
Circulate and support individual understanding, prompting deeper thinking on why these features form in these locations.
Bonus challenge: Students sketch a simple cross-section illustrating sediment layers in a tombolo.

Discussion & Analysis (10 minutes)

Objective: Evaluate importance and human impact

Facilitate a class discussion:
- Why are bars and tombolos important for coastal environments? (e.g. create habitats, protect coastlines, affect navigation)
- How do human activities like tourism or coastal management interact with bars/tombolos?
Encourage students to consider both positive and negative impacts.
Relate to local UK examples and conservation issues (e.g., how bars can change due to storms or sea-level rise).

Plenary & Assessment (10 minutes)

Objective: Reinforce understanding and assess learning

Quick round robin: Each student verbally summarises one fact about bars and tombolos.
Short written quiz in workbooks (5 questions): mixing multiple choice and short answer (e.g., “Describe how a tombolo forms,” “Give one reason why bars are important to coastal communities”).
Collect workbooks for formative assessment with feedback notes.

Differentiation and Extension

For students needing support: provide labelled diagrams and sentence starters on worksheets.
For more able students: ask for a brief written evaluation of human impacts or instruct them to research another UK bar or tombolo for homework.
Extension activity: Create a 3D model of a tombolo using recyclable materials for the next lesson’s display.

Assessment Criteria

Accurate use of key terminology: longshore drift, deposition, wave refraction.
Clear identification and explanation of bars and tombolos in maps and diagrams.
Ability to discuss environmental and human significance of these features confidently.
Completion and accuracy of the quiz and worksheet.

Homework Suggestion

Write a short report (100-120 words) about a famous tombolo or bar in the UK, explaining how it formed and why it is important geographically and economically.

Teacher’s Notes

Keep the demonstration interactive; invite students to simulate sediment transportation by moving small pebbles or sand in the trays.
Maintain momentum during discussion with targeted questions to ensure all students contribute given the small class size.
Use local coastal examples where possible to connect learning to the students’ environments.
Encourage visual and kinaesthetic learning styles with models and drawing activities.

This lesson plan actively builds geographical knowledge, skills, and critical thinking aligned with the National Curriculum for England, offering multiple multimodal learning methods for Year 9 students while fostering engagement and assessment suitable for small group teaching.

Teaching Instructions