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Physical Science
20 apps to play — grouped by age.
🐣 Ages 3–5 · Pre-K & K
🎈 Ages 6–8 · Grades 1–3
CrashPals
Ages 6–8 · Gr 1–3 Level 1
A crash lab for ages 6–8: two carts roll toward each other and clink together. Guess which way they roll after they bump — left, stop, or right — then watch! Chug the marmot shows the big idea: the cart with more push (how big × how fast) decides which way. On-device; nothing leaves your device.
Play CrashPals →
SproutLab
Ages 6–7 · Gr 1–2 Level 1
Guess what happens, then find out — hands-on science with Hatch the chick: light, sound, and melting-and-freezing, for grades 1–2.
Play SproutLab →
SciQuest
Age 8 · Gr 3 Level 1
Do grade-3 science with Sage — predict what will happen, watch what really does, and figure out WHY. Force labs, camouflage, weather vs climate. Predict-Observe-Explain, everything read aloud. Made for grade 3.
Play SciQuest →
🎒 Ages 9–14 · Grades 4–8
AweForge
Ages 9–12 · Gr 4–7 Level 3
Watch a science demonstration that looks impossible, guess how it really works before the reveal, then discover the physics or chemistry behind the wonder. Stage your own science show, and practice 16 kits of science questions — from optical illusions and kitchen chemistry to forces, sound, and engineering. On-device, no accounts.
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GrowForge
Ages 9–12 · Gr 4–7 Level 2
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 the answer and why. Explore a plant cell under the microscope, and practice with 16 kits of plant science, from seeds and photosynthesis to genetics and ecosystems. On-device, no accounts, no location, nothing leaves the device.
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WildLens
Ages 9–11 · Gr 4–6 Level 1
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 near the top, then practise ecology across 16 kits of classification, adaptations, biodiversity, and conservation.
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BiomeForge
Ages 9–12 · Gr 4–7 Level 3
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 through a food web before a species is added or removed in the Food-Web Lab; and practice ecology across 16 kits. Food webs, energy flow, and ecosystem balance — on-device, no accounts, no ads.
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EcoSphere
Ages 10–12 · Gr 5–7 Level 3
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. Then predict how a real conservation project turns a broken ecosystem around before the model reveals it, and practice ecosystems, energy flow, biomes, and conservation across 16 kits. Hope-forward and on-device; works with the sound off.
Play EcoSphere →
DepthQuest
Ages 9–12 · Gr 4–7 Level 2
Dive the ocean’s zones — predict how pressure, light and temperature change with depth, match deep-sea adaptations, and practice 16 marine-science kits.
Play DepthQuest →
LabSmith
Ages 10–12 · Gr 5–7 Level 3
A hands-on physics lab — predict what happens before the experiment runs: which shot flies farther, which pendulum swings slower, which bulb glows brighter, plus 400 physical-science questions.
Play LabSmith →
FlightForge
Ages 9–12 · Gr 4–7 Level 3
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 questions, from the four forces of flight to rockets and drones. On-device, no accounts.
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PowerForge
Ages 11–13 · Gr 6–8 Level 3
Build power plants, balance an electrical grid against real demand, and trace energy through every conversion — the science and engineering behind the power that runs everything.
Play PowerForge →
WaveForge
Ages 10–13 · Gr 5–8 Level 3
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.
Play WaveForge →
PrismForge
Ages 11–13 · Gr 6–8 Level 3
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.
Play PrismForge →
HitchForge
Ages 9–13 · Gr 4–8 Level 3
Which knot won’t choke down when you pull it? Why does a reef knot fail the moment you join a thin rope to a thick one? And why does a trucker’s hitch let a 20 kg pull cinch a line to 60 kg? A knot isn’t a trick — whether it holds is force you can reason about: the right knot for the job, a steady pull versus a gusting one, the geometry of two ropes, and the pulley hidden in a loop of rope. Predict which holds, then load-test the knots yourself. Tiny, deterministic force science — no internet. Ages 9–14.
Play HitchForge →
BackstageQuest
Ages 9–13 · Gr 4–8 Level 3
The jobs behind the glass, ages 9–14: spend a week backstage at the museum. Free a fossil without cracking it, protect a rare loan, keep the butterflies alive, light a fragile quilt so it lasts, run the touch cart. Each job has a real tool — and a real way to get it wrong. On-device.
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MohsForge
Ages 10–13 · Gr 5–8 Level 3
A mineral-identification lab for ages 9–14: an unknown specimen lands on the bench — run the real tests (hardness, streak, luster, heft, magnet, acid, UV, crystal shape) to narrow it down and name it, the way a museum curator does. On-device; nothing leaves your device.
Play MohsForge →
🎓 Ages 15–18 · Grades 9–12
ForceForge
Ages 15–18 · Gr 9–12 Level 5
Predict the physics before it happens — final velocity, momentum, energy, orbits — then a real engine computes it. HS mechanics & more. For teens.
Play ForceForge →
RoadForge
Ages 15–18 · Gr 9–12 Level 5
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 real developing scenes. Understanding & practice — not a substitute for state driver ed. Ages 15–18. On-device, no ads, no account.
Play RoadForge →