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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
Collection4 items
01Physics · L1 · Balanced & Unbalanced Forces
02Physics · L1 · Balanced & Unbalanced Forces
03Physics · L1 · Ball Rolling on Grass vs Ice
+1 morePhysics · L1 · Balanced & Unbalanced Forces
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Physics · L1 · Balanced & Unbalanced ForcesCollection4 items
01Physics · L1 · Energy in Motion
02Physics · L1 · Energy in Motion
03Physics · L1 · A Swing Turns Stored Energy Into Motion
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Physics · L1 · Energy in MotionCollection4 items
01Physics · L1 · Fast & Slow
02Physics · L1 · Fast & Slow
03Physics · L1 · Slowest to Fastest
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Physics · L1 · Fast & SlowCollection4 items
01Physics · L1 · Springs & Stretchy Things
02Physics · L1 · Springs & Stretchy Things
03Physics · L1 · Squeezing a Pogo Stick Spring
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Physics · L1 · Springs & Stretchy ThingsCollection4 items
01Physics · L1 · Weighing & Balancing
02Physics · L1 · Weighing & Balancing
03Physics · L1 · Using a Balance Scale
+1 morePhysics · L1 · Weighing & Balancing
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Physics · L1 · Weighing & BalancingCollection4 items
01Physics · L1 · Rainbows & Mixing Colors
02Physics · L1 · Rainbows & Mixing Colors
03Physics · L1 · From Sunlight to a Rainbow
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Physics · L1 · Rainbows & Mixing ColorsCollection4 items
01Physics · L1 · Bubbles & Surface Tension
02Physics · L1 · Bubbles & Surface Tension
03Physics · L1 · Why a Paperclip Can Float on Water
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Physics · L1 · Bubbles & Surface TensionCollection4 items
01Physics · L1 · Friction: Why Things Slow Down
02Physics · L1 · Friction: Why Things Slow Down
03Physics · L1 · Why a Rolling Ball Stops
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Physics · L1 · Friction: Why Things Slow DownCollection4 items
01Physics · L1 · Keeping Warm: Insulators & Conductors of Heat
02Physics · L1 · Keeping Warm: Insulators & Conductors of Heat
03Physics · L1 · Choosing Materials for a Cooking Pot
+1 morePhysics · L1 · Keeping Warm: Insulators & Conductors of Heat
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Physics · L1 · Keeping Warm: Insulators & Conductors of HeatCollection4 items
01Physics · L1 · Where Light Comes From: Sources vs Reflections
02Physics · L1 · Where Light Comes From
03Physics · L1 · Is It a Light Source or a Reflector?
+1 morePhysics · L1 · Where Light Comes From: Sources vs Reflections
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Physics · L1 · Where Light Comes From: Sources vs ReflectionsCollection4 items
01Physics · L1 · Swings & Pendulums: Back-and-Forth Motion
02Physics · L1 · Swings & Pendulums
03Physics · L1 · One Back-and-Forth Swing
+1 morePhysics · L1 · Swings & Pendulums: Back-and-Forth Motion
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Physics · L1 · Swings & Pendulums: Back-and-Forth MotionCollection4 items
01Physics · L1 · Static Electricity: Balloons & Hair
02Physics · L1 · Static Electricity: Balloons & Hair
03Physics · L1 · What Happens When You Rub a Balloon
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Physics · L1 · Static Electricity: Balloons & HairCollection4 items
01Physics · L1 · Wind & Moving Air: Kites, Sails & Pinwheels
02Physics · L1 · Wind & Moving Air
03Physics · L1 · How Wind Fills a Sail
+1 morePhysics · L1 · Wind & Moving Air: Kites, Sails & Pinwheels
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Physics · L1 · Wind & Moving Air: Kites, Sails & PinwheelsCollection4 items
01Physics · L1 · Magnifying Glasses & Simple Lenses
02Physics · L1 · Magnifying Glasses & Simple Lenses
03Physics · L1 · How a Magnifying Glass Makes Things Look Bigger
+1 morePhysics · L1 · Magnifying Glasses & Simple Lenses
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Physics · L1 · Magnifying Glasses & Simple LensesCollection8 items
01Physics · L2 · Speed: Distance and Time
02Physics · L2 · Energy Forms
03Physics · L2 · Simple Machines
+5 morePhysics · L2 · Energy & Motion
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Physics · L2 · Energy & MotionCollection5 items
01Physics · L2 · Newton's Three Laws
02Physics · L2 · Newton's Three Laws
03Physics · L2 · Newton's Three Laws of Motion
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Physics · L2 · Newton's Three LawsCollection5 items
01Physics · L2 · Series Circuits
02Physics · L2 · Parallel Circuits
03Physics · L2 · Series & Parallel Circuits
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Physics · L2 · Series & Parallel CircuitsCollection4 items
01Physics · L2 · Refraction & Lenses
02Physics · L2 · Refraction & Lenses
03Physics · L2 · Light Bending From Air Into Water
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Physics · L2 · Refraction & LensesCollection5 items
01Physics · L2 · Heat Transfer
02Physics · L2 · Heat Transfer in Everyday Life
03Physics · L2 · Heat Transfer: Conduction, Convection, and Radiation
+2 morePhysics · L2 · Heat Transfer
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Physics · L2 · Heat TransferCollection5 items
01Physics · L2 · What Is Density?
02Physics · L2 · Buoyancy & Archimedes' Principle
03Physics · L2 · Density & Buoyancy
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Physics · L2 · Density & BuoyancyCollection4 items
01Physics · L2 · Pressure
02Physics · L2 · Pressure: Atmospheric & Fluid
03Physics · L2 · Snowshoe vs Boot Heel: Same Force, Different Pressure
+1 morePhysics · L2 · Pressure
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Physics · L2 · PressureCollection4 items
01Physics · L2 · Magnetism & Electromagnets
02Physics · L2 · Magnetism & Electromagnets
03Physics · L2 · Building an Electromagnet
+1 morePhysics · L2 · Magnetism & Electromagnets
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Physics · L2 · Magnetism & ElectromagnetsCollection5 items
01Physics · L2 · Work & Power
02Physics · L2 · Work & Power: Practice Problems
03Physics · L2 · Work & Power
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Physics · L2 · Work & PowerCollection5 items
01Physics · L2 · Momentum & Collisions
02Physics · L2 · Momentum & Collisions
03Physics · L2 · Momentum & Collisions
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Physics · L2 · Momentum & CollisionsCollection4 items
01Physics · L2 · Static Electricity
02Physics · L2 · Static Electricity
03Physics · L2 · How a Rubbed Balloon Gets Static Cling — or a Shock
+1 morePhysics · L2 · Static Electricity
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Physics · L2 · Static ElectricityCollection5 items
01Physics · L2 · Introducing Ohm's Law
02Physics · L2 · Introducing Ohm's Law
03Physics · L2 · More Voltage, More Current
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Physics · L2 · Introducing Ohm's LawCollection4 items
01Physics · L2 · Permanent Magnets & Field Lines
02Physics · L2 · Permanent Magnets & Field Lines
03Physics · L2 · How a Compass Finds North
+1 morePhysics · L2 · Permanent Magnets & Field Lines
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Physics · L2 · Permanent Magnets & Field LinesCollection4 items
01Physics · L2 · Friction
02Physics · L2 · Friction
03Physics · L2 · Static Friction vs. Kinetic Friction
+1 morePhysics · L2 · Friction
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Physics · L2 · FrictionCollection4 items
01Physics · L2 · Wave Basics
02Physics · L2 · Wave Basics
03Physics · L2 · Sorting a Wave: Transverse or Longitudinal?
+1 morePhysics · L2 · Wave Basics
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Physics · L2 · Wave BasicsCollection4 items
01Physics · L2 · Projectile Motion Basics
02Physics · L2 · Projectile Motion Basics
03Physics · L2 · Why a Thrown Ball Follows a Curved Path
+1 morePhysics · L2 · Projectile Motion Basics
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Physics · L2 · Projectile Motion Basics