Curated Video
Introduction to Area
Join us in this video and learn about area and a square unit, a way to measure area. We will also play some puzzle games and divide and create shapes from triangles and squares. Let's dive in!
Curated Video
How to Make Race Car Game with Cardboard
Let’s build a game with cardboard for children to steer their car up the curving road by pulling strings! MATERIALS: - Cardboard - Paper straw (plastic or paper) - Paper - String - Marker - Scissors or box cutter - Hot glue gun...
Curated Video
Competition Math Shortcut: Solve For This Special Triangle's Area In Seconds
The leg of a right triangle is equal to 1/5 the sum of the other sides. The triangle has a perimeter of 1. What is its area? My blog post for this video http://wp.me/p6aMk-52p Source: I received a similar problem, from a New York...
Curated Video
Math Puzzle: Area of a Triangle
A right triangle has a hypotenuse of 3, and one of its legs is 1 unit longer than the other. What's the area of the triangle? If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on...
Curated Video
This Is Not Impossible! Solve For The Triangle's Area
This is a delightful problem. Find the area of the triangle defined by the four squares. It seems impossible but it can be solved with the right perspective. Can you figure it out? Sources Puzzle by Catriona Shearer...
Curated Video
How to Make a Simple Pinball Machine with Cardboard
wanted to share a little bit of these analogue holiday memories with you, and I came up with a make-shift pinball machine. MATERIALS: - Cardboard - Wooden clothespin - Wooden popsicle stick - Coloured paper - Plastic or rubber ball -...
Curated Video
Evil Geometry Problem
A geometry textbook has the following problem: "A right triangle has a hypotenuse equal to 10 and an altitude to the hypotenuse equal to 6. What is the area of the triangle?" Can you figure out the correct answer? Blog post (text/image...
Curated Video
HARD Geometry Problem: Can You Solve The Horse Grazing Puzzle?
A horse is tied to an outside corner of a 20 foot by 10 foot rectangular barn. What is the maximum area the horse can graze outside, if the rope has length L? Solve for L = 5 and L = 25 (find exact answers). If you are up for a...
Curated Video
A Chinese 5th Grader Solved This In Just 1 Minute! HARD Geometry Problem
Thanks to Bill from New York for this suggestion! Bill emailed me a problem asked to 5th graders in China to identify talented students. A few very talented students did solve it in less than one minute! I was not able to solve the...
DoodleScience
Newton's Laws of Motion | A-Level Physics | Doodle Science
A Level Physics Doodle Science teaches you high school and College physics in a less boring way in almost no time! Follow me: https://twitter.com/DoodleSci You can support me at: https://patreon.com/doodlescience Script: Newton’s first...
Financial Times
US 2020 election: how Joe Biden won the presidency
The FT's US managing editor Peter Spiegel and global business columnist Rana Foroohar analyse the issues that shaped the US election outcome, how Joe Biden defeated Donald Trump in key battleground states, and whether their own...
Curated OER
How do You Find the Area of a Triangle?
Help your class visualize how to find the area of a triangle. In a step-by-step process, the instructor shows how to calculate the area of a triangle. Great for instruction and/or review.