Pre-lab checklist.

How to use this checklist

Real laboratories run on checklists, and so do good lab classrooms. The point is not to slow your child down — it is to make the careful things automatic so attention is free for the science. Run all three sections, top to bottom, before any specimen is opened or any reagent is poured. A box left unchecked is a reason to pause, not a thing to skip.

The professional habit is simple: nothing sharp, nothing chemical, and nothing living gets handled until every safety box is checked.

Safety

This section is non-negotiable. Confirm every item before the experiment begins — not partway through, when hands are already busy.

• Goggles on — splash-rated, worn over the eyes (not pushed up on the forehead) for the entire session.
• Gloves on — nitrile or latex, intact and the right size, whenever handling specimens, stains, or preservatives.
• Ventilation confirmed — window open or fume extraction running before opening preserved specimens. Preservative fumes (formalin, alcohol) must never build up in a closed room.
• Sharps protocol set — scalpels and dissection needles cut away from the body and away from the other hand; a sharps tray or holder is within reach; nothing sharp left loose on the bench.
• Hand-washing planned — soap and water available, and hands washed at the end before touching anything else — especially before food or face.
• Spill & first-aid known — you know where the paper towels, the first-aid kit, and the nearest sink are before you need them.

Setup

A clean, complete setup is what separates a real experiment from an improvised scramble. Confirm the bench is ready so the time on Experiment Day is spent on observation, not on hunting for a missing slide.

• Specimen or slides ready — the right specimen at hand, slides prepared or prepared-slide set located, labeled, and in order.
• Microscope checked — powered on, objectives clicking cleanly, stage clips working, light source functioning, and lenses clean. Start on the lowest power.
• Lab notebook open — the notebook is open to a fresh, dated page before work begins, ready for live observations and sketches.
• Reagents labeled — every stain, buffer, or reagent is correctly labeled, dated, and at the bench; nothing unlabeled is ever used.
• Tools laid out — dissection kit, forceps, pins, dropper, and waste container arranged within reach so hands stay over the tray.
• Workspace clear — bench wiped down, bags and coats off the surface, only what the experiment needs in front of you.

Readiness

The last section is about the mind, not the bench. An experiment done without understanding is just following steps; an experiment done with a clear objective is science. Confirm your child knows why they are about to do what they are about to do.

• Pre-read done — the procedure has been read all the way through, start to finish, so there are no surprises mid-experiment.
• Today's objective known — you can state, in one sentence, the question this experiment is meant to answer.
• Demonstration target clear — you know what you are expected to show or measure by the end — the specific result, structure, or skill that counts as success.
• Prediction written — you have written a one-line hypothesis: what you expect to see, and why, in terms of the concept just taught.

When all three sections are checked, your child is not just allowed to begin — they are prepared to begin, which is a different and far more valuable thing. Run this list every time and the discipline stops feeling like a chore and starts feeling like what it is: how careful scientists work.