International Mud Day Activity Ideas

International Mud Day is the perfect excuse to embrace mess, curiosity, and hands-on learning. Whether you’re exploring science, building vocabulary, or getting creative, mud can be a surprisingly powerful teaching tool.

Here are 5 fun, educational outdoor lesson ideas to celebrate Mud Day with your class — all linked to curriculum skills and easy to set up.

1. Descriptive Writing: Step Into the Mud

Mud Day Lesson Ideas
Outdoor Adjectives – Mud Day Lessons

Let your students step barefoot into trays of mud, then describe how it feels using powerful sensory adjectives and figurative language. This activity turns a simple muddy moment into a rich writing experience — perfect for building vocabulary, similes, and metaphors outdoors.

Download the mud day lesson here.

2. STEM Challenge: Build a Mud Brick

Materials and their Properties Teaching Ideas

Challenge your class to design the strongest mud brick using a mixture of soil, water, straw, and sand. Then test and compare the bricks to see which mixture holds up best. It’s a muddy way to explore materials and their properties while encouraging teamwork and investigation.

Download the mud day STEM challenge here.

3. Mud Kitchen Math & Role Play

Turn your outdoor space into a messy, creative mud kitchen! These recipe cards are perfect for early years and KS1, encouraging imaginative play while introducing measurement, counting, and following instructions. The focus is on ingredients only — giving students room to play freely.

Download the Mud Kitchen Recipe Cards here.

4. Soil Science Investigation

Soil Lesson

Not all mud is created equal! In this science-based lesson, students investigate different types of soil — from sandy to clay-rich — and compare how they feel, look, and react with water. Great for covering science objectives around geology and materials in a fun, muddy way.

Download the International Mud Day Lesson here.

5. Create a Mud Creature & Describe It

Outdoor Creative Writing

Let imaginations run wild as students sculpt creatures from mud and natural materials. Once their creations are complete, they’ll write character descriptions filled with vivid adjectives and creative ideas. A brilliant blend of art, play, and literacy!

Download the muddy creative writing lesson here.

Mud Day is more than just messy fun — it’s a chance to get outside, think creatively, and make learning memorable. With over 390 outdoor lessons on Educate Outside, there’s something for every subject, season, and age group.

Explore more outdoor learning ideas and celebrate nature, learning, and mud with us!

Shape, Space and Measure: 6 Easy Outdoor Lessons to Take Maths Outside
Fun Outdoor Activities for Kids This Summer: Scavenger Hunts, Photo Challenges & Nature Play