World Environment Day Assembly /KS1 primary

Guardians of the Green Planet: World Environment Day Assembly

A powerful and engaging KS1 primary assembly for World Environment Day, helping children understand why our planet matters and how small everyday actions can make a big difference.

This assembly introduces pupils to the wonder of the natural world, including oceans, rainforests and Arctic lands. It then explains key environmental challenges in a child-friendly way, such as climate change, shrinking habitats, water pollution and plastic waste. Children are encouraged to become Eco-Warriors by reducing waste, recycling properly, saving water and caring for nature.

What’s included

• Complete 30-minute KS1 assembly presentation
• Introduction to World Environment Day
• Simple explanation of oceans, rainforests and Arctic habitats
• Child-friendly climate change explanation
• Plastic pollution discussion
• The 3 Rs Challenge, Reduce, Reuse, Recycle
• Everyday eco-actions pupils can take
• Eco-Warrior discussion
• Interactive recycling sorting activity
• “Power of One” reflection
• Greta Thunberg inspiration slide
• Future world visualisation activity
• Earth Day pledge
• Class eco-action challenge

Perfect for

• World Environment Day
• KS1 assemblies
• Primary school eco themes
• Climate change awareness
• Recycling and sustainability lessons
• PSHE and citizenship
• Science topics on habitats and the environment
• Eco-school projects
• Summer term assemblies

Key learning

Children will learn that:

• Earth is full of amazing habitats and living things
• Oceans, rainforests and Arctic lands all play an important role
• Plastic pollution can harm wildlife and oceans
• Climate change affects people, animals and habitats
• We can help by reducing, reusing and recycling
• Small actions, such as turning off taps and lights, matter
• Young people can make a difference
• Everyone can become a guardian of the green planet

Interactive activities included

• Sorting recycling, general waste and compost items
• Eco-Warrior discussion prompts
• Future world reflection
• Whole-school Earth pledge
• Class eco-action challenge

This assembly is designed to be clear, hopeful and practical. It avoids overwhelming young children and instead helps them feel empowered to care for the planet through simple, positive actions.