Struggling to make School Science Week special when you’ve already done volcanoes, slime, and every other “exciting” experiment three times?
Picture this. It’s 1910 in Lyon, France. Edmond Locard is the most annoying dinner guest imaginable. While everyone else enjoys their meal, he pulls out a magnifying glass and inspects people’s coat sleeves. He studies the dust on their shoes and eagerly announces where they’ve been that day.
His friends think he’s completely bonkers. His colleagues at the police department dismiss him as a time-waster. Yet Locard is obsessed with one idea that seems ridiculous: that tiny, invisible traces of material can solve crimes better than witness statements or confessions.
Eventually, the police give him the smallest, most unwanted space in the building. Two attic rooms. No funding. No staff. Just Locard and his microscopes, treating dust particles as if they were precious gems.
Then everything changes. A group of women are suspected of making fake coins. There’s no proof. Locard asks to examine their fingernails. The police roll their eyes. What could fingernails possibly prove?
Under the microscope, Locard finds tiny particles of metal embedded beneath the nails. The composition matches the fake coins exactly. When confronted with this evidence, the women confess. They had scrubbed their hands and cleaned their workspace. But they never thought about what was hiding under their nails.
This dust-obsessed, magnifying-glass-wielding oddball proves something profound: “Every contact leaves a trace.” You can’t move through the world without picking up and leaving behind microscopic evidence. Locard’s Exchange Principle becomes the foundation of modern forensic science.
That cramped attic soon becomes the world’s first modern crime laboratory. Locard goes from being mocked as the “dust detective” to revolutionising criminal investigation worldwide. His secret? He never stops noticing the tiny details everyone else ignores.
And that’s exactly where Science Week activities can learn a lesson.
Why Traditional Science Week Activities Fall Flat
Here’s the problem with planning STEM workshops. The experiments that look most exciting on paper—the volcanoes, the slime, the Mentos explosions—are often the ones students forget by next week. We chase the “wow moment” but overlook what actually sticks: students feeling like real scientists solving real problems.
The Forensic Science Revolution in Primary Schools
The most unforgettable Science Week activities don’t rely on flashy demos. Instead, they give students genuine investigative challenges. They make children think like Locard examining dust under a microscope.
For example, consider fingerprint analysis. Every child knows fingerprints are unique. But how many have lifted a print, compared it with a suspect’s, and solved a mystery? When you turn your school hall into an active crime scene, the magic begins. Students practice observation, deduction, and critical thinking while racing to crack the case.
Another example is blood spatter analysis. Don’t panic—we use fake blood and simple physics. Students see how angle and force affect spatter patterns. Suddenly, velocity, gravity, and trajectory—core Key Stage 2 concepts—become exciting, hands-on science.
What Makes STEM Education Actually Stick
The genius of forensic science is simple: every piece of evidence tells a story. DNA samples become real when students build their own models and match them to suspects. Fibre analysis matters when that red thread proves who broke into the vault. Footprints are thrilling when careful measurement means catching the thief.
And here’s the kicker. When students solve a genuine mystery during Science Week—a £32 million diamond theft, for instance—they become investigators, not spectators. They tape off scenes and gather evidence. Then debate theories. They fail, adjust, and try again.
Making School Science Week Special
This isn’t just interactive science. It’s training the next generation of critical thinkers. Students discover that science is not about memorising facts. It’s about asking questions, gathering evidence, and piecing together answers from tiny clues—just like Locard.
That’s why CSI forensic workshops are so powerful. They transform your hall into a crime scene and turn every pupil into an investigator. These experiences engage even reluctant learners. Students beg to analyse one more fingerprint or check one more clue.
Giant Journeys CSI Forensic School Workshops
The Perfect Crime Scene for Your School
It’s the perfect crime. A high-security vault. Gems worth £32 million. By morning, the Venus Diamond is gone. Can your students crack the case?
How These Workshops Work
One class at a time, students begin by exploring DNA, fingerprints, footprints, and fibres—the tools of real forensic science. Then the hall transforms into their crime scene. Police tape, evidence markers, eight suspects—everything they need.
Students will:
Secure the scene
Collect and examine evidence
Analyse fingerprints and footprints
Test fibres and DNA
Reconstruct what happened
Identify the guilty suspect
Why These Workshops Stand Out
Hands-On Learning: Every child becomes an investigator.
Curriculum-Aligned: Activities link to Key Stage 2 science.
Flexible: Adaptable for all ages and abilities.
Perfect for Science Week: Memorable experiences that last.
Teamwork & Critical Thinking: Students collaborate to solve cases.
Available Across the UK and Ireland
Delivered in school halls, these workshops bring everything needed to create a professional crime scene. Students don’t just learn forensic science—they live it. They carry the same curiosity that drove Locard over a century ago.
If you’d like to bring this CSI experience to your school for Science Week or beyond, check availability here. Expect your students to be dusting for fingerprints at home for weeks!
Final Thought
Locard’s “every contact leaves a trace” principle still applies today. As you read this, you’re leaving behind invisible evidence: skin cells, fibres, footprints. When children realise they’re walking evidence trails through school, the fascination is instant. One teacher told us that after a CSI workshop, pupils spent an entire week trying to sneak around without leaving traces. Break time became stealth training!
Sometimes the best Science Week activities don’t just teach facts. They change how students see the everyday world. Who knew dust could be so inspiring?
You can read more about British Science Week 2026 here
