Curated Video
Enormous painting depicts Battle of Atlanta
As cities and states across the South are removing or covering up Confederate monuments, an enormous painting depicting the Battle of Atlanta from the American Civil War will soon reopen to the public.
Khan Academy
SAT Prep: Test 1 Section 3 Part 4
Pushing through to problems 11-12 on page 398 of The Official SAT Study Guide, Sal goes into comprehensive detail on each problem. Problem 11 involves geometry, including the function of pi, and problem 12 involves non-constant slopes....
Khan Academy
SAT Prep: Test 3 Section 2 Part 3
Math speeds along in this video, which takes students through problems 11-15 on the practice SAT. Sal takes care to show students more than one possible way to solve several problems, allowing them to make the choice based on their own...
Khan Academy
SAT Prep: Test 8 Section 2 Part 1
Test eight from The Official SAT Study Guide includes eighteen problems, the first four of which are featured in this video. Basic algebraic expressions, linear equations, tangent circles, and coordinates on a plane test algebra and...
Khan Academy
SAT Prep: Test 6 Section 7 Part 5
On the home stretch of this practice session, Sal completes problems 18 and 19 on page 738 of The Official SAT Study Guide. He begins problem 20, but chooses to finish it in the next video instead of rushing the answer. As always, Sal's...
Khan Academy
SAT Prep: Test 7 Section 5 Part 2
Complicated word problems and expressions are no match for Sal, and after watching this series, they will be no match for your students either! Sal deftly handles problems involving algebraic equations, averages, and circumference.
Khan Academy
SAT Prep: Test 7 Section 5 Part 4
Transitioning between algebra and geometry is no problem for Sal as he deftly solves these practice SAT problems. Mathematicians who have a hard time moving between skill sets will appreciate the way that Sal addresses each new problem...
Flipped Math
Unit 9 Review: Area of Polygons
It's time to show what you know! Individuals first review finding the area of polygons using the formulas from parallelograms to regular polygons. They then brush up on finding the area and circumference of circles, as well as reviewing...
Flipped Math
Circles and Arc Lengths
Discuss all things round and round. Pupils review finding area and the circumference of circles and use them to solve problems. Next, they learn about central angles and their relationships to measures of arcs. Learners then find out how...
NASA
STEMonstrations: Orbits
Learn about the orbit of the International Space Station directly from an astronaut on the International Space Station! Young scholars hear about the shape and path of orbits from a NASA astronaut in the video lesson from a larger...
PBS
Pi Day | All About the Holidays
Pi day is both delicious and informative! Play a short video on Pi Day to explain the basics behind both the holiday and the infinite number.
Corbett Maths
Circumference
Circumference and diameter differ by just a factor of pi. A short video shows viewers how to calculate circumference given the diameter. It also gives an example of determining the diameter given the circumference.
PBS
Formulas for Circle Area and Circumference: Simple as Pie
Calculating circumference is as easy as pi times diameter. A short video explains how to measure pie tins using the diameter. It also describes the relationship between diameter and circumference. Using the knowledge, scholars consider...
PBS
Scale City — Scaling up Recipes and Circles in the Real World
What a great big skillet you have. The resource introduces the class to the world's largest stainless steel skillet. The class creates a model of the skillet and a typical 12-inch skillet and compares the relative sizes of their areas....
Corbett Maths
Perimeter of a Semi-Circle
Surround yourself with knowledge about perimeter. An informative video shows viewers how to find the perimeter of a semicircle. It begins with an explanation of calculating the length of the semicircular arc and ends with adding on the...
Corbett Maths
Angles at the Centre and Circumference – Proof
Scholars ponder the proof relating the center angle and circumference using a demonstrative video. Additional worksheets and textbook practice helps them demonstrate their intellect.
Mathispower4u
Circumference, Volume of a Cone, Pythagorean Theorem (L1.5)
There's a formula for that. An educational video shows viewers how to apply geometry formulas to solve problems. It covers the formulas for the circumference of a circle, volume of a cone, and the Pythagorean Theorem.
CK-12 Foundation
Circumference: Lesson
It all depends what is given. The section of a large geometry playlist discusses the two formulas for finding the circumference of a circle. With the aid of the formulas, the presenter demonstrates finding the distance around circles in...
CK-12 Foundation
Measuring Arc Length: Lesson
Slice off a piece of pi! A section of an extensive playlist on geometry develops the formula to find the length of an arc. Using the formula, the presentation works through examples finding the arc length, the radius, and the measure of...
Physics Girl
Spool Riddle - Which Way Will It Roll?
Looking for a challenging brain teaser to stimulate conversation? The spool riddle will make things roll right along! The narrator of the a physics video series explains the constraints of the spool in terms of movement and friction,...
Numberphile
Calculating Pi with Real Pies
Pie is great for finding pi. A short video shows how to use real pies to calculate pi. The method involves laying out pies along the circumference and along the diameter of a circle, and then finding the ratio of the number of pies.
Math Antics
Circles, Circumference and Area
Put pi to work. The video provides the formulas for the circumference and area of circles. Using the formulas, the presenter shows how to distinguish the two using units. The discussion leads to the second formula for finding the...