Spark & Anvil Ages 15–18
BenchForge
Design the test, not just take it: spot leakage, find the hard cases, and see how the metric picks the winner. How to trust a number. For teens.
- Science
- Scientific Method & Evaluation
From our friends at Spark & Anvil
Spark & Anvil is our sibling project — built by the same people, on the same principles: free forever, no accounts, nothing about you tracked. It's a broad catalogue of playable K-12 learning apps. Below are their science & STEM apps closest to what we do here; the full catalogue lives at sparkanvil.org.
Every link is age-tagged at the source. We only surface tools for ages 9 and up (Fold Commons serves 9–14 and older); each card shows its age band. Links open Spark & Anvil in the same tab.
Selecting a filter updates the list below.
Age band
Showing all 29 apps
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- Spark & Anvil Ages 9–14
BioForge
Explore a cell and a body diagram tap by tap, build an ecosystem food web from producer to decomposer, and practice biology from cells to evolution across 16 kits.
- Science / Biology
- Spark & Anvil Ages 9–14
BiomeForge
Build a small living world and keep it in balance. Stock an aquarium or terrarium with producers, consumers, and decomposers in the Biome Builder and watch the balance model react; predict the ripple…
- Science
- Science / Ecology & Life Science
- Spark & Anvil Ages 9–14
ClassPact
For teachers: build a classroom charter with your class in one period. Together you agree how you want this room to feel, what you will do to feel that way, and — the part most rules posters skip…
- Social & Emotional Learning
- Social & Emotional Learning · educators — a classroom feelings charter built with the class (how we want to feel · what we’ll do · what when we don’t): the census-safest RULER climate tool, no student data
- Spark & Anvil Ages 9–14
ClimateQuest
Slide the CO₂ level and watch a real (simplified) climate model respond — greenhouse forcing, warming, sea level, and sea ice. Predict the warming before the model reveals it, read climate datasets…
- Science / Climate
- Spark & Anvil Ages 9–14
CosmosForge
Watch a star live and die in the Stellar Evolution lab, peer inside a black hole and feel gravity stretch time, climb the Cosmic Distance Ladder, and practice astronomy & astrophysics across 16 kits.
- Astronomy & Astrophysics
- Spark & Anvil Ages 9–14
CreatureCare
Run an animal hospital — predict the diagnosis, choose the care, watch the animal recover — plus 400 animal-science questions.
- Science
- Veterinary & Animal Science
- Spark & Anvil Ages 9–14
DataForge
Build data pipelines, chart the story, and test hypotheses on real datasets — plus 16 kits.
- Math
- Data Science
- Spark & Anvil Ages 9–14
DepthQuest
Dive the ocean’s zones — predict how pressure, light and temperature change with depth, match deep-sea adaptations, and practice 16 marine-science kits.
- Science
- Science / Marine Biology
- Spark & Anvil Ages 9–14
EcoSphere
Explore Earth as a living web of connected parts. Pull one thread in the Ecosystem Lab — remove the otters, bring back the wolves — and watch the trophic cascade ripple up and down the food chain…
- Science / Ecology
- Spark & Anvil Ages 9–14
FlightForge
Fly a wing through a wind tunnel to see lift, drag, and stall for yourself, then predict which paper-plane design flies farthest before you launch it. Plus 16 kits of aerodynamics and flight-physics…
- Science
- Science / Aerodynamics & Flight Physics
- Spark & Anvil Ages 15–18
ForceForge
Predict the physics before it happens — final velocity, momentum, energy, orbits — then a real engine computes it. HS mechanics & more. For teens.
- Science
- HS Physics
- Spark & Anvil Ages 9–14
FossilForge
Run a real fossil dig from excavation to identification, read the age of rock layers, order the eras of deep time, build the tree of life, and practice paleontology across 16 kits.
- Science / Paleontology
- Spark & Anvil Ages 9–14
GrowForge
Predict what a plant needs to thrive, then watch the science decide — read a plant’s light, water, soil, warmth, and food and guess which one is holding it back most, before the growth model reveals…
- Science
- Science / Plant Science & Botany
- Spark & Anvil Ages 9–14
HeatForge
Predict how heat travels by conduction, convection, or radiation, engineer insulation that wins on R-value, and practice thermodynamics across 16 kits.
- Science / Thermodynamics
- Spark & Anvil Ages 9–14
HorizonQuest
The real-sky companion that gets the family OUTSIDE: see tonight’s real Moon phase, pick your part of the world on a map, and learn the naked-eye stars, planets, and asterisms to look for — with five…
- Science
- Science · Astronomy (real-sky, naked-eye observation)
- Spark & Anvil Ages 15–18
InquiryForge
Judge real experiments — read a study, predict whether it holds up, then spot the confound or the noise. For teens.
- Science
- Scientific Method
- Spark & Anvil Ages 15–18
OutbreakForge
Epidemiology you can run, for ages 15–18. Pick a synthetic outbreak, predict what happens, then a deterministic SIR/SEIR model computes it — the curve, R₀, the herd-immunity threshold. Then you…
- Science
- Life Science
- Spark & Anvil Ages 9–14
PrismForge
Bend, reflect, and split light on a virtual optics bench — set a lens, mirror, or prism and watch a real ray-trace, order the electromagnetic spectrum, and mix colors of light, across 16 optics kits.
- Science / Optics & Light
- Spark & Anvil Ages 15–18
ReactQuest
Predict what the reaction does — moles, molarity, pH, gas volumes — then a real engine computes it. HS chemistry, no lab coat required. For teens.
- Science
- HS Chemistry
- Spark & Anvil Ages 15–18
RoadForge
Learn to drive with the physics underneath it: watch stopping distance grow with the square of your speed, feel the 3-second following rule as time, read a wet road, and train hazard perception on…
- Science
- Science · Physics of Driving (stopping distance & hazard perception)
- Spark & Anvil Ages 9–14
ScienceForge
Design a fair test by choosing what to change and what to measure, run the predict-observe-explain loop, and practice the scientific method across 16 kits.
- Science / Scientific Method
- Spark & Anvil Ages 15–18
ShapeForge
Shape follows sequence: predict what a protein segment folds into, what buries in the core, and how one changed letter (sickle-cell) reshapes it. The reasoning behind the AlphaFold era. For teens.
- Science
- Structural Biology & Biochemistry
- Spark & Anvil Ages 15–18
ShiftForge
The science of your sleep, for ages 15–18. Pick a schedule and the two-process model shows your alertness hour by hour — when you’ll be sharp, when you’ll crash — plus your week’s sleep debt. Then…
- Science
- Life Science
- Spark & Anvil Ages 9–14
StarForge
Pilot the solar system: tap a planet on the orbit map for real NASA data, take a mission challenge, predict a moon phase before the reveal, and practice astronomy across 16 kits.
- Science
- Astronomy & Space Exploration
- Spark & Anvil Ages 9–14
TraitForge
Step into the genetics lab: build the complementary DNA strand base by base, transcribe DNA into mRNA and read the codon chart, fill a Punnett square to predict offspring, work backwards from an…
- Science / Genetics
- Spark & Anvil Ages 9–14
WaveForge
See sound as a living wave on an oscilloscope, tune a string to its resonant note, and practice acoustics and wave physics across 16 kits — all in your browser, no mic needed.
- Science / Acoustics & Waves
- Spark & Anvil Ages 9–14
WeatherForge
Step into the weather lab: read a synoptic panel of pressure, humidity, and fronts to forecast tomorrow, give a percent-chance of rain and see how well-calibrated your confidence is, assemble the…
- Science / Meteorology
- Spark & Anvil Ages 9–14
WildLens
Become a Species Detective and identify wildlife from its field marks — group, habitat, diet, when it’s active, size — with no camera needed, build each habitat’s food web and see why energy runs out…
- Science / Wildlife & Ecology
No apps match those filters.
Why we link out
Fold Commons and Spark & Anvil share a mission — free, open, no-tracking learning tools — and a founder. We surface each other's work so a curious learner can move between structural biology and the wider world of science without an account, a paywall, or a tracker anywhere in sight. We never embed their apps or fetch them while you browse: this page is assembled once at build time from their public apps feed, and every link is age-tagged so nothing unsuitable reaches a younger audience.