Physics Classroom
Law Enforcement - Hit-and-Stick Collisions
How do police determine the speed of a car that has hit a stopped vehicle? Scholars determine the momentum of the car system both before and after a collision. They identify instances where the law of conservation of momentum appears to...
Physics Classroom
Case Studies: Impulse and Force
Why are gym walls padded and cars required to have air bags? Scholars observe two similar situations, such as those listed above, with only one variable altered. They identify the different variable and determine how the variation...
Physics Classroom
Being Impulsive About Momentum Change
Scholars quantitatively apply their knowledge relating impulse, force, and time in the collision of objects. Three progressive levels challenge pupils with different ways of analyzing these problems. They identify multiple collision...
Physics Classroom
Law Enforcement - Explosions
How do law enforcement officers determine the strength of an explosion based on the movement of objects around the point of origin? Scholars inspect the relative mass and velocities of two cars before and after an explosion. They perform...
Howard Hughes Medical Institute
Virochip DNA Microarray
Virochips detect and identify viruses at a higher rate than other tests. Show young scientists how Virochips work to identify existing viruses. They analyze results demonstrating mutations or the evolution of viruses and view videos...
Physics Classroom
Newton's Second Law
Physics formulas provide more interest than simple math equations thanks to an informative installment from the series on Newton's laws of motion. The formulas guide pupils' thinking about how varying a quantity affects the rest of the...
Physics Classroom
Match That Free-Body Diagram
Pupils read a description of a physical situation and select the free-body diagram that best matches. As part of a series on applying Newton's Laws of Motion, scholars reinforce their skills applying forces and considering their relative...
Physics Classroom
Recognizing Forces
A common complaint among physics scholars studying Newton's laws of motion concerns drawing free-body diagrams. To practice the required pre-requisite skills for free-body diagrams, individuals identify which forces act in specific...
Physics Classroom
Change of State
Free-body diagrams display all forces acting on an object, helping scientists represent Newton's Laws of Motion. Scholars read a short description of motion and view the free-body diagram to begin the installment of a larger series on...
Physics Classroom
Force and Motion
Scholars focus on associating balanced forces with at rest or constant velocity motion and unbalanced forces with acceleration or deceleration. Practice problems with immediate feedback allow for quick success in an installment of the...
Physics Classroom
Balanced vs. Unbalanced Forces
Scientists use many different kinematic representations of motion. Review each of them with the help of an engaging interactive that is part of a larger series on Newton's laws of motion. The resource provides three levels of challenge...
Annenberg Foundation
Balancing Sources
Pupils turn into investigative reporters throughout history to learn what it takes to balance different primary sources on the same topic. They use what they learn to create a narrative based on their own interpretation of a historic...
Annenberg Foundation
Analyzing Artifacts
If only a mask could talk! Using the interactive tool along with historical thinking skills, pupils uncover the meaning behind the various materials the resource presents. History becomes more relevant as the artifacts tell their stories...
Me and My Shadow
Trace My Shadow
Which creates more digital traces: surfing the Internet in a coffee shop, or using an iPhone to send a text message? The answer may surprise you! An interactive resource prompts users to choose which devices, operating systems, and...
Physics Classroom
Charge and Charging
Does your class understand how things become charged? Are you positive? Before negative grades emerge, assign a fun interactive! The first in the five-part Static Electricity series contains three levels of charge-related questions and...
iCivics
Counties Work
Turn learning into a game by asking pupils to play an online interactive activity! Learners choose their own characters, departments, work toward building the population of their towns, earn money, and must maintain an approval rating...
Howard Hughes Medical Institute
Creating Phylogenetic Trees from DNA Sequences
How closely are animals related? Check their phylogenetic trees! The use of DNA sequencing altered our understanding of these relationships. Individuals explore and gain a better understanding of how scientists sort, align, and determine...
Howard Hughes Medical Institute
Skeletons Reveal Human and Chimpanzee Evolution
Ardipithecus ramidus shares features with both humans and chimpanzees. Learn about where Ardi, humans, and chimps fit in the tree of life by comparing anatomical features including the foot, pelvis, and teeth. After exploring those...
Howard Hughes Medical Institute
Regulation of the Lactase Gene
All human infants are lactose tolerant, yet some adults are lactose intolerant—why is that? Individuals discover the process of gene mutation through a study of the lactase gene (LCT). They understand the geographic connections,...
Howard Hughes Medical Institute
Paleoclimate: A History of Change
Earth's climate changed drastically throughout the history of the planet, so why do scientists blame humans for recent changes? Observe data covering the history of the planet that proves the natural climate change patterns. Then, learn...
Howard Hughes Medical Institute
Geological History of Oxygen
Earth didn't always have oxygen, so what caused the change that allows humans to live here? Learn about the change in O2 levels throughout geological history through an interactive graph. Each section offers greater detail on the changes...
Howard Hughes Medical Institute
Explore Your Inner Animals
Human bodies prove evolution thanks to our genes, bones, and more. Learning about specific body parts and how they evolved from other species helps individuals better understand the transition species that helped us become who we are today.
Howard Hughes Medical Institute
Great Transitions Interactive
How did life evolve from fish to four-limbed animals? Work through an interactive exploring transition animals and comparing their features to understand the transition. Making it even better, the interactive allows scholars to isolate...
Physics Classroom
Parallel Circuits - ∆V = I•R Calculations
Parallel circuits often provide less of a challenge for teens than parallel parking. An installment of a series on parallel electric circuits requires learners to solve increasingly difficult levels of calculations. Each level provides...