A number lying in the middle between two numbers.

The meaning of the rate

The rule of distance between two points

This video explores five fun facts about glaciers.

In this video, the teacher explains how to identify patterns and associations in a scatter plot using a standardized math test question as an example. The viewer is guided through each answer choice and taught to recognize outliers,...

In this video, a math teacher demonstrates how to interpret a graph and answer standardized math test questions. The teacher covers topics such as finding the distance a car traveled in a certain amount of time, calculating the average...

This video reviews a math test prep question on comparing mean and mean absolute deviation (MAD) using line plots to record the number of whales seen on morning and afternoon whale watch trips. The teacher explains how to find the mean...

In this video, the Pythagorean Theorem is explained and applied to solve a real-world problem involving a ladder leaning against a building. The viewer is guided through the process of creating an equation using the given measurements...

Distance and displacement

This video explores five fun facts about the sphere.

Lenticular Clouds are also known as Lenticularis because they are shaped like a lens. They are common over mountains where air is forced to rise and sink, forming smooth clouds above the mountains and downwind of the mountains. They also...

This Free Response Question includes the following concepts: Graphing Velocities of Carts during a Collision, Conservation of Linear Momentum, Conservation of Energy and Elastic Collisions.

That's right. We never see anything as it happens. We only see the past.

This problem is about the acceleration of a ball at the top of its path when thrown up on the surface of a small asteroid.

This problem is about how the gravitational force on a ball changes as it moves up away from a small asteroid.

This problem is about determining the constant electric field inside a parallel place capacitor in terms of electric potential and distance between the plates.

This problem is about finding the kinetic energy of an electron in orbit around a proton

This problem is about using conservation of energy to determine the final kinetic energy of a charged particle released from the positively charged plate of a parallel plate capacitor.

This problem is about the net electric field caused by two positive charges.

My solutions to Free Response Question #3 from the 2017 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam. This Quantitative/Qualitative Translation question also works as a part of the AP Physics...

My solutions to Free Response Question #4 from the 2017 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam. This Short Answer question also works as a part of the AP Physics C: Mechanics curriculum.

My solutions to Free Response Question #4 from the 2018 AP Physics 1 Exam. This is short answer question about mechanical waves. Also included are my reflections on how to get perform better on the exam.

Do you suffer from eye strain from digital screens like Smart Phones, Computers & Laptops? Me too! Though my day job is being a DOCTOR, I spend my off-time making animations & browsing Reddit in front of digital screens. In this video, I...

This video shows the process for solving the problem presented in SATs 2022 Paper 3 Q21, which involves finding the coordinates of a point in a rectangle. Specifically, we will examine two identical rectangles, each with a length that is...