A 1957 Putnam exam problem

Proxemics is the nonverbal communication study of how much personal space people prefer to leave between themselves and others and it is a key feature of human interaction because it gives us cues about the nature of our relationships...

A humorous look at the mathematics behind infinite series.

This video will explain how atmospheric circulation and global wind patterns affect the movement of air on the earth.

A video entitled "Perimeters of Shapes" uses vertex coordinates to find the perimeters of shapes.

A video entitled “Area of Oblique Triangles” which models how to calculate the areas of oblique triangles.

A video entitled “Measuring Movement” which breaks down the study of movement by focusing on the relationship between speed, velocity, and acceleration.

A video entitled “Rhombus, Square, Rectangle” discusses the attributes of several quadrilaterals, including squares, rhombuses, and rectangles.

The video “Forces at Work” defines the concept of work and discusses how work relates to time, distance, and power in the field of physics.

Finally! It is time for the party and Clarissa has never looked more glamourous. As the guests arrive, Clarissa’s anxiety boils over. What if the party is a failure and she looks like a fool? When she hears about a horrible event that...

In this video, a math teacher explains how to order absolute value expressions from least to greatest. They first explain the concept of absolute value and then demonstrate how to evaluate and compare four different expressions. Grade 6...

In this video, the teacher explains how to find the distance between two points on a number line using absolute value. The teacher walks through the steps of identifying the points, using absolute value to find the distance, and writing...

In this video, a math teacher explains how to compare absolute value expressions using inequalities. The teacher walks through five answer choices and explains why only two of them are correct. This video is helpful for anyone looking to...

In this video, the teacher explains how to identify the correct statements about a transformation of a triangle on a coordinate plane. The teacher goes through each answer choice and explains why it is either correct or incorrect,...

The bar-tailed godwit makes the longest nonstop flight of any bird: From Alaska to New Zealand.

In this math video we will learn how to plot the solution on a number line to answer a standardized math test question. We will solve an equation by adding rational numbers. We will review the rule for adding number values with different...

Studies have shown that the mobile data consumes more energy than Wi-Fi. This is because a cellular connection must always be maintained for calls and texts. Also, cellular towers are generally very far away, as compared to Wi-Fi...

The legendary Greek philosopher Socrates first popularized the idea that the Earth was round instead of flat. He observed a lunar eclipse and realized that the shadow on the moon due to the Earth was curved, which prompted him to deduce...

Learn how to the PING))) ultrasonic distance sensor from Parallax, also called a sonar sensor, with an Arduino to measure the distance to a target object. Visit the Science Buddies website for cool science projects you can do with an...

Can you build a tool to retrieve a ping pong ball from as far away as possible, using nothing but paper, string, tape, and paper clips? Give it a try and enter your design in the 2023 Science Buddies Engineering Challenge for a chance to...

This video discusses the three common states of matter: solid, liquid, and gas. The video starts with an introduction and shows the three states of matter: a beaker (solid), water (liquid), and air (gas). Then, the video explains the...

First we solve for the electric potential along the axis of a uniform thin ring of electric charge. Then we use that electric potential to solve for the electric field at the same location.

The electric potential difference in a uniform electric field is derived and used to show lines of equal electric potential or equipotential lines. Equipotential lines and surfaces of point charges and dipoles are shown. The equation for...

Calculus is used to derive the equation for the electric potential difference between two parallel plates of equal but opposite charge. It’s a uniform electric field. The significance of the negative in the equation is explained.