Earth Day on 22 April, is a great opportunity to pause, reflect and bring environmental thinking into everyday teaching. Whether you’ve got time during an assembly for five minutes, or a full lesson, small, purposeful activities can help students connect what they’re learning to the world around them.
You don’t need a full scheme of work or specialist knowledge to make it meaningful. The aim is simple: help students notice, question and engage.
Why Earth Day matters in the classroom
For many students, climate change and sustainability can feel abstract or overwhelming. Bringing it into the classroom in practical, age-appropriate ways helps them:
- see their role in the bigger picture
- develop critical thinking, not only awareness
- feel a sense of agency (rather than anxiety)
The most effective activities aren’t about delivering facts, but about creating space for curiosity, discussion and small actions.
Earth Day ideas for primary classrooms
1. Start with a simple question
Ask: “What does the Earth do for us?”
Create a class mind map and revisit it at the end of the day to add new ideas.
2. Recycling sorting challenge
Bring in (clean) everyday items and ask pupils to sort them into recycling, reuse or waste.
You can extend this by:
- timing groups for a bit of competition
- discussing why some items are tricky
3. Plant something (and track it)
Whether it’s seeds in pots or herbs on a windowsill, this builds a long-term connection.
Link to:
- science (growth and conditions)
- responsibility and care
4. Earth Day pledge leaves
Students write one small action they’ll take (e.g. turning off lights, using less plastic) on a paper leaf and add it to a class “tree”.
5. Nature walk with a purpose
Head outside, even if it’s just around the playground, and ask pupils to:
- spot signs of nature
- notice changes or problems (litter, lack of plants)
Follow up with a short discussion or drawing activity.
If you’re planning an assembly for Earth Day suitable for Early Years, Key Stage One or Two, you may want to make use of our assembly resource.
Earth Day ideas for secondary classrooms
1. Quick-fire debate
Use a statement like:
“Individual actions make no real difference to climate change.”
Students position themselves (agree/disagree) and justify their thinking.
This works well as a low-prep starter (similar to “agree/disagree” activities).
2. School sustainability audit
Ask students to investigate:
- energy use
- waste
- transport
Then present one realistic improvement the school could make.
3. “If this is the answer…” starter
Give students a statistic (e.g. about plastic waste or emissions) and ask:
What’s the question?
This builds curiosity and critical thinking before introducing content.
4. Create a campaign
Students design a short campaign aimed at:
- younger students
- families
- the local community
Focus on clarity: one message, one action.
5. Data to decision-making
Use real-world climate or environmental data and ask:
- What does this show?
- What might happen next?
- What should be done?
This works particularly well in geography, science or PSHE.
Our climate change quiz is ideal for Earth Day as a starter for a key stage 3 geography lesson.
Keep it manageable (and meaningful)
Earth Day doesn’t need to become another pressure point in an already busy term.
A few things that make the biggest difference:
- keep activities short and purposeful
- link to what you’re already teaching
- prioritise discussion over perfection
- focus on small, realistic actions
Students don’t need you to have all the answers. They may benefit from seeing you explore the questions with them.
Looking for ready-to-use resources?
We’ve pulled together a range of Earth Day and sustainability resources to help you save time and bring these ideas straight into your classroom.
Browse Earth Day classroom resources
