Instructional Video5:11
Corbett Maths

Enlargements with Negative Scale Factor

For Students 6th - 12th Standards
How will a scale factor affect a figure—negatively? Using a grid, the narrator of an engaging video performs a dilation with a negative scale factor. The presenter compares a positive scale factor with a negative scale factor to explain...
Instructional Video6:09
Corbett Maths

Density

For Students 7th - 12th Standards
A short video introduces the triangle that illustrates how to find any value given the other two in the density formula. Class members use the triangle to work several problems to find the mass, volume, or density of an object.
Interactive
Curated OER

Challenge: Tasty Tomato

For Students 6th - Higher Ed
Take a big bite out of the red tomato by practicing your use of the variables mouseX and mouseY in a JavaScript coding task. The activity will guide you step-by-step and will help young coders understand how to draw objects based on the...
Interactive
CK-12 Foundation

Going Fishing

For Students 6th - 12th
Why do some things float and others sink? A creative simulation allows learners to adjust mass and volume of an object to affect its buoyancy in water. A graph records the effect of each manipulation.
Interactive
CK-12 Foundation

Astronaut Training Chamber

For Students 6th - 12th Standards
Most people realize they would weigh less if they were on the moon, but does it change how much weight you could lift if you were on the moon? Scholars adjust the mass of an object to be lifted and select between four different...
Interactive
CK-12 Foundation

Light Wave

For Students 9th - 12th Standards
Do radio waves create light? It's more difficult to understand the things we can't see than those that we can. The simulation compares the relatively small range of visible light to the entire electromagnetic spectrum. It graphs the size...
Interactive
CK-12 Foundation

Block and Tackle

For Students 6th - 12th Standards
Can you easily lift more than your own weight? With a pulley system, almost anyone can manage this challenge. Scholars adjust the mechanical advantage (number of pulleys), weight of object being lifted, and the length of rope pulled. The...
Interactive
CK-12 Foundation

Newton's Cannon

For Students 9th - 12th
Gravity does more than keep our feet on the ground — it holds a satellite in orbit, too. Help learners understand the effects of gravity on an orbiting object through a simulation activity. Individuals adjust a launch speed and watch as...
Interactive
CK-12 Foundation

Magnifying Glass

For Students 6th - 12th Standards
How can a magnifying glass or reading glasses make things appear larger? Scholars simulate moving a lens closer or farther from an object to observe the resulting image. They also alter the lens focal length. The simulation shows the...
Interactive
CK-12 Foundation

Black Hole

For Students 9th - 12th Standards
What happens to radio waves, time, and light in and near a black hole? Young scientists explore what is known about observing frequency and time at various distances from a black hole. They control the size of the black hole and the...
Lesson Plan
PBS

Curious George: Five Senses

For Teachers Pre-K - 1st
Curious scholars make like Curious George and use their five senses to identify mystery objects. After a brief discussion, learners watch an engaging Curious George video in preparation for an activity. Scholars visit three tables that...
Interactive
CK-12 Foundation

Cliff Diver

For Students 6th - 12th
Cliff diving is more than an adrenaline rush ... it's a lesson in physics! Scholars adjust the height of a cliff and plot the resulting velocity and position over time on graphs. They also can incorporate air resistance to monitor the...
Lesson Plan3:27
TED-Ed

The Fundamentals of Space-Time: Part 3

For Teachers 9th - 12th
If you weren't already blown away by first two installments, check out this clip on how gravity and space-time interact! Our physicist friends, Pontzen and Whyntie, continue their discussion of these motion concepts for your high...
Interactive
CK-12 Foundation

Archery

For Students 9th - 12th Standards
Archery is believed to be one of the oldest sports in the world at more than 25,000 years old—meaning it can teach your classes a lot! Scholars learn about the forces interacting in the archery simulation. They control the archer's...
Activity6:12
TED-Ed

Bringing a Pop-up Book to Life

For Students 3rd - 9th Standards
Breath life into the pages of a text with this instructional video on creating pop-up books. From choosing a topic, through the planning and creation phases, this video examines how to develop engaging visual...
Interactive
CK-12 Foundation

Unicycle

For Students 6th - 12th Standards
What is the steepness of a hill before a unicyclist slides down it rather than pedaling down it? The simulation graphs the wheel speed versus the unicycle speed as the rider goes down a hill. Scholars control the mass of the rider,...
Interactive
CK-12 Foundation

Marie Curie's Classroom

For Students 9th - 12th Standards
What makes some elements stable and others radioactive? Scholars adjust the number of protons and neutrons in an element then observe its decay. The simulation includes a graphical representation and the chemical formula, as well as...

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