Fingerprinting: Forensics Activity

DIY Fingerprint Forensics Activity

Objective: To teach children how to collect and examine their own fingerprints using simple, safe materials. This activity introduces basic forensic science techniques and encourages observation and critical thinking.

- #2 pencil (soft lead preferred)

- White paper (plain printer or index card)

- Clear adhesive tape (transparent, not matte finish)

- “Fingerprint Card” (pre-printed with Name and Date lines or blank paper)

- Optional: Magnifying glass

Procedure

Step 1: Prepare the 'Ink Pad'

Take the pencil and rub it on paper to create a solid, dark patch of graphite (about 2x2 inches). Ensure it's dark enough to fully coat a fingertip.

Step 2: Collect the Fingerprint

Choose one finger (thumb works best). Press firmly onto the graphite patch, rolling to cover the entire fingertip.

Step 3: Lift the Print

Tear off a piece of clear tape, press sticky side to the fingertip, then peel off carefully.

Step 4: Transfer the Print

Place tape (sticky side down) onto the “Fingerprint Card.” Smooth it to remove bubbles.

Step 5: Examine the Pattern

Use a magnifying glass to observe loops, whorls, or arches. Compare with others.

Safety & Clean-Up: Graphite is non-toxic but can be messy. Provide wet wipes or access to

hand-washing. Dispose of used tape and paper properly.

Learning Outcomes: Understand how forensic scientists collect fingerprints, recognize basic

fingerprint patterns, and practice observational and comparison skills.