Science · Foundation

Active learning ideas

Lunar Phases and Tides

Active learning works because students need to see the Moon’s changing light and ocean bulges, not just hear about them. Hands-on models let children feel the pull of gravity and watch shadows shift instead of guessing from diagrams alone.

• ACARA Content Descriptions
• AC9S7U06
• AC9S8U06

• 20–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Stations Rotation
• 30 min · Small Groups

Demonstration: Ball and Lamp Phases

Provide each group a tennis ball as Moon, small globe or head as Earth, and torch as Sun. Students stand in darkened room, hold ball at arm's length, shine light on one side, then rotate slowly to observe phase changes. Record drawings of five key phases on worksheets.

Explain the different phases of the Moon and what causes them.

Facilitation Tip

During Ball and Lamp Phases, move slowly around the lamp so students see the lit side change from every angle.

What to look for

Provide students with drawings of the Earth, Moon, and Sun in different positions. Ask them to draw arrows showing the direction of light and label the resulting lunar phase (e.g., New Moon, Full Moon). Also, ask them to draw arrows indicating where the ocean bulges would be on Earth.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 02

• Stations Rotation
• 20 min · Individual

Tracking: Moon Observation Journal

Give students printed journals with nightly charts. Each evening for two weeks, they draw Moon shape, note time and weather outside. In class, share entries on board to spot cycle pattern. Discuss why Moon rises later each night.

Describe how the gravitational pull of the Moon and Sun creates tides on Earth.

Facilitation Tip

When students keep the Moon Observation Journal, ask them to note the Moon’s position in the sky each clear night to build daily habits.

What to look for

Ask students: 'Imagine you are a fisherman living by the sea. Why would you need to know about the Moon's phases? How might the Moon's shape affect when the water is highest or lowest?'

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 03

• Stations Rotation
• 40 min · Pairs

Hands-on: Tide Basin Model

Fill shallow trays with water, place blue food colouring for oceans. Use large ball as Earth, smaller as Moon; roll Moon around Earth while gently tilting tray to show water bulges. Compare high/low tide heights at different positions. Groups measure and graph results.

Analyze the relationship between lunar phases and tidal patterns.

Facilitation Tip

Before handing out the Tide Basin Model, require each group to predict where the bulges will form based on their Moon position.

What to look for

Show students a picture of the Moon in a specific phase. Ask them to hold up a card with the correct phase name or draw a simple diagram showing the Earth, Moon, and Sun positions that create that phase.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 04

• Simulation Game
• 25 min · Small Groups

Simulation Game: Phase and Tide Match

Print cards with phase drawings, tide types, and positions. Students in groups match sets: full moon with spring tides, quarter moons with neap tides. Discuss matches before revealing answers with teacher model.

Explain the different phases of the Moon and what causes them.

Facilitation Tip

In Phase and Tide Match, give teams 30 seconds to explain their match to another group before revealing the answer.

What to look for

Provide students with drawings of the Earth, Moon, and Sun in different positions. Ask them to draw arrows showing the direction of light and label the resulting lunar phase (e.g., New Moon, Full Moon). Also, ask them to draw arrows indicating where the ocean bulges would be on Earth.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

A few notes on teaching this unit

Teach this topic by letting students feel the forces first. Start with a bright lamp and a ball to show how light and shadow create phases, then move to water trays to feel gravity’s invisible pull. Avoid long lectures about angles, because children learn phases through motion and observation rather than static drawings. Research shows that building models with their hands, not just watching animations, leads to stronger mental models of Earth, Moon, and Sun relationships.

By the end of these activities, students will explain why the Moon’s shape changes nightly and how tidal bulges move around Earth. They will track the Moon, build working tide models, and match phases to tides with confidence.

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Watch Out for These Misconceptions

• During Ball and Lamp Phases, watch for students who say the Earth’s shadow causes the phases.

  Remind students to keep the ball at arm’s length and rotate it slowly around the lamp; the shadow they see is the unlit side, but the lit side changes due to position, not Earth’s shadow blocking light.

• During Tide Basin Model, listen for explanations that mention wind or boats pushing water.

  Have each group place a small ball on one side of the tray and watch the water rise on both sides; ask them to feel the pull toward the ball and see bulges without any wind or boats.

• During Moon Observation Journal, some students may think the Moon’s shape changes permanently each night.

  Point to the journal’s blank phase circle and ask students to predict what shape they will see next, then check their prediction the following night to show the cycle repeats every 29 days.

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Methods used in this brief

• Stations Rotation
• Simulation Game