Can you make two water samples match before you test anything?
Public beta missionFollow the matching kit materials and the safety guidance on this page. Final production-kit validation is still in progress, so stop and ask a grown-up if your physical setup differs.
1 · Learn to Compare
Your new skill: Label, measure and keep two samples consistent.
Meet the parts
Match the names to your parts before you build. New parts appear when you first need them. You can point, say the name or show a grown-up.
Beaker or measuring cup New here
This container holds and mixes liquids. Its mL marks help us measure volume: how much liquid we use.
Spot it and try it
Look for: Find the scale and the mL label. One millilitre is a small unit of liquid volume.
Before using it: Put it flat, look at the water level from the side and use readable markings. Ask for a measuring cup if the kit marks are unclear.
Your turn: Point to the 10 mL line without adding powder.
Dropper New here
A dropper moves a small amount of liquid, one drop at a time.
Spot it and try it
Look for: Find its squeeze bulb and narrow tip.
Before using it: Squeeze before dipping, release to draw liquid, then press gently. Rinse between samples. Never mouth-pipette. Drop size can vary.
Your turn: Practise three separate drops of clean water into a tray.
Test tube and stand New here
A tube holds a small sample. The stand helps keep tubes upright while we compare them.
Spot it and try it
Look for: Find the narrow containers and matching holes in the stand.
Before using it: Label samples before filling. Keep them open and stable; never seal a fizzing reaction.
Your turn: Place two empty tubes in the stand and label them A and B.
Mixing stick New here
A mixing stick moves liquid and powder together so we can compare how mixing affects a result.
Spot it and try it
Look for: Find the clean stirrer named in the materials.
Before using it: Use a clean stick for each sample, or rinse and dry between samples. Never taste it.
Your turn: Rehearse a gentle stir in an empty container without splashing.
Ruler timer and evidence sheet New here
A ruler measures distance. A timer measures elapsed time. Your paper records a prediction and result so you can compare tests.
Spot it and try it
Look for: Find the cm marks or the timer display and a place to draw or write.
Before using it: Use the same start point and method each time. You can say, point or draw your evidence instead of writing long answers.
Your turn: Choose the mark where the first measurement will begin.
Tray cup and dry workspace New here
A tray catches spills, cups hold samples or form a model, and a dry workspace protects our tools.
Spot it and try it
Look for: Choose the exact container and dry surface in the mission list.
Before using it: Experiment cups stay separate from food and drinks. Keep electronics away from liquids and clean up before storing parts.
Your turn: Show where a spill would land and where electrical parts will stay dry.
Meet the parts for The Drop Detective
A video demonstration will appear here when it is ready. You can follow the written step now.
Read the video instructions
Before we build, match these names to the parts in front of you. Beaker or measuring cup. This container holds and mixes liquids. Its mL marks help us measure volume: how much liquid we use. Find the scale and the mL label. One millilitre is a small unit of liquid volume. Put it flat, look at the water level from the side and use readable markings. Ask for a measuring cup if the kit marks are unclear. Dropper. A dropper moves a small amount of liquid, one drop at a time. Find its squeeze bulb and narrow tip. Squeeze before dipping, release to draw liquid, then press gently. Rinse between samples. Never mouth-pipette. Drop size can vary. Test tube and stand. A tube holds a small sample. The stand helps keep tubes upright while we compare them. Find the narrow containers and matching holes in the stand. Label samples before filling. Keep them open and stable; never seal a fizzing reaction. Mixing stick. A mixing stick moves liquid and powder together so we can compare how mixing affects a result. Find the clean stirrer named in the materials. Use a clean stick for each sample, or rinse and dry between samples. Never taste it. Ruler timer and evidence sheet. A ruler measures distance. A timer measures elapsed time. Your paper records a prediction and result so you can compare tests. Find the cm marks or the timer display and a place to draw or write. Use the same start point and method each time. You can say, point or draw your evidence instead of writing long answers. Tray cup and dry workspace. A tray catches spills, cups hold samples or form a model, and a dry workspace protects our tools. Choose the exact container and dry surface in the mission list. Experiment cups stay separate from food and drinks. Keep electronics away from liquids and clean up before storing parts. Pause and point to the part that will do the main job in this mission. If it is missing or looks different, ask a grown-up before building.
WHAT YOU'LL USE
Match these to your kit
Beaker with readable mL markingsDropper2 matching tubes and standMixing stick
Gather from home
TrayClean waterPaper and pencilOptional household measuring cup if kit markings are unclear
Kit list: match the named parts to your box and its component cards. Home list: gather these before starting; some may also be supplied in your kit. Reuse components between missions. Stop and ask a grown-up if an essential part or label is missing.
BEFORE YOU BUILD
An adult supervises. Wear the kit goggles. Keep experiment tools away from food, eyes and mouths. Use only the named materials and amounts. Never taste or deliberately smell samples. Keep containers open. Wash hands after cleanup.
YOUR REWARD
+80 XPMission completion
PREDICT BEFORE YOU BEGIN
Before you start, predict the result and say why. It is fine if your prediction changes after the test.
YOUR CHALLENGE
Can you make two water samples match before you test anything?
NEW POWER-UP
Label, measure and keep two samples consistent.
Start here. We will learn one useful skill, then reuse it in the next mission.
Open diagrams and build references
BUILD PATH
STEP 1 OF 6
Set out a tray, beaker, dropper, two matching tubes and a mixing stick
Try · Notice · ExplainRead the checkpoint, make a prediction, then test your idea.
Set out a tray, beaker, dropper, two matching tubes and a mixing stick. Label the tubes A and B. Use plain water only.
The Drop Detective — Step 1
A video demonstration will appear here when it is ready. You can follow the written step now.
Read the video instructions
Set out a tray, beaker, dropper, two matching tubes and a mixing stick. Label the tubes A and B. Use plain water only.
Need a diagram for this step?
WHAT'S REALLY HAPPENING?
Why it works
A fair comparison starts with labels and consistent measurement. Millilitres describe volume; drop size can vary with the tool and the way it is squeezed.
FAIR-TEST CHALLENGE
Change one feature, keep the rest the same and repeat your comparison.
NEXT SKILL
Describe gas evidence without chasing a bigger eruption.