Try science. Print it. Build it. Explore it.
A growing library of free practical science activities spanning space, neuroscience, marine biology, robotics, chemistry, engineering, climate, genetics and more.
Rocket Design Challenge
Design, test and improve a paper rocket while exploring forces, stability and fair testing.
Open free activity →Marine BiologyBuild an Ocean Food Web
Connect organisms in a marine ecosystem and investigate what happens when one population changes.
Open free activity →NeuroscienceBrain Reaction-Time Test
Run a simple reaction-time investigation and compare repeated measurements.
Open free activity →Robotics & AIRobot Navigation Grid
Write an algorithm that moves a paper robot through a grid while avoiding obstacles.
Open free activity →ChemistryKitchen pH Indicator Lab
Explore acids and bases using a household indicator made from red cabbage.
Open free activity →Energy & ClimateMini Solar Oven
Build a solar-heating device and investigate how surface colour and insulation affect warming.
Open free activity →GeneticsDNA Code Message
Use four DNA bases as a coding system to create and decode secret messages.
Open free activity →Human BiologyHeart-Rate Investigation
Measure how pulse rate changes before and after safe light activity.
Open free activity →AstronomyMoon Crater Investigation
Model impact craters and test how drop height changes crater size.
Open free activity →EngineeringPaper Bridge Engineering
Engineer a paper bridge that supports the greatest load using limited materials.
Open free activity →Environmental ScienceMicroplastic Thinking Audit
Map everyday plastic use and design a realistic reduction experiment without handling environmental samples.
Open free activity →Forensic ScienceForensic Pattern Lab
Compare safe pattern evidence and learn why forensic conclusions need controls and uncertainty.
Open free activity →Earth ScienceHome Weather Station
Build a simple observation routine and collect consistent weather data over one week.
Open free activity →ComputingBinary Pattern Challenge
Represent letters with binary patterns and create a physical or drawn coded sequence.
Open free activity →Plant SciencePlant Water Journey
Observe water movement in a plant stem using coloured water.
Open free activity →PhysicsString Telephone Physics
Build a simple string telephone and test conditions that affect sound transmission.
Open free activity →Environmental EngineeringWater Filtration Model
Design a model filter and evaluate clarity while learning that clear-looking water is not necessarily safe to drink.
Open free activity →Space ScienceDesign an Exoplanet
Create a scientifically reasoned fictional planet using constraints about stars, atmosphere and temperature.
Open free activity →EpidemiologyOutbreak Network Model
Use a paper contact network to explore how connection patterns affect simulated transmission.
Open free activity →Biology & EngineeringBiomimicry Design Sprint
Study a biological adaptation and turn its principle into an engineering idea.
Open free activity →Cognitive ScienceMemory Strategy Mini Study
Compare two simple study strategies using small word lists and careful interpretation.
Open free activity →Marine EcologyCoral Stress Systems Map
Build a causal map linking temperature stress, coral-algae relationships and reef ecosystem effects.
Open free activity →Artificial IntelligenceHuman-Powered AI Classifier
Create a rule-based paper classifier to explore features, labels, errors and bias.
Open free activity →Scientific MethodTurn Curiosity into a Testable Question
Transform a broad curiosity into a measurable scientific investigation.
Open free activity →Use free activities as building blocks.
Each activity makes the scientific thinking explicit—questions, variables, evidence, models, limitations or design iteration—so it can support a broader curriculum rather than becoming a one-off craft.
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