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SciShow
Those Pretty Road Medians May Be Bad for Bugs
Cities have been working hard to transform the areas around roads into healthy habitats for important pollinating insects. And these insects seem to love our roadside landscapes, but these areas might also be luring them to their...
Curated Video
Where is the Centre of a Triangle?
The answer is not as straight-forward as it might seem, because all triangles have more than one centre! How many centres does a triangle have, and how do you find them? Maths - Shape A Twig Math Film. Reinforce and extend the learning...
Curated Video
Proving the Concurrency of Medians Theorem
In this lesson, students will learn how to prove the concurrency of medians theorem using parallel lines and properties of similar triangles. They will explore the concept of medians, midsegments, and midpoints in triangles, and...
Science360
Ants Take Big Bite Out of Big Apple
Researchers unearth "groundbreaking" research about ants in Manhattan - here's what we caught on camera!
Every year they remove tons of refuse from New York City streets and help keep down the rat population. See what...
Every year they remove tons of refuse from New York City streets and help keep down the rat population. See what...
Curated Video
GCSE Secondary Maths Age 13-17 - Probability & Statistics: Box Plots - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...
Curated Video
Comparing Variability: Medians and Interquartile Ranges
In this video, the teacher explains how to compare the variability in weights of professional baseball and soccer players using medians and interquartile ranges. They demonstrate that while baseball players are heavier on average, soccer...
Brian McLogan
How to use the medians of similar triangles to determine the missing length
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Curated Video
GCSE Secondary Maths Age 13-17 - Probability & Statistics: Cumulative Frequency Graph - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...
Brian McLogan
Special segments of similar triangles medians
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Curated Video
GCSE Secondary Maths Age 13-17 - Probability & Statistics: Comparing data - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...
Professor Dave Explains
Special Lines in Triangles: Bisectors, Medians, and Altitudes
Working with triangles.
Getty Images
High Angle pan-right - A police officer stands with a group of travelers next to two vehicles on the median as traffic travels past. / Los Angeles, California, USA
High Angle pan-right - A police officer stands with a group of travelers next to two vehicles on the median as traffic travels past. / Los Angeles, California, USA
Getty Images
A bicyclist crosses the median of a busy highway in Bandung, Indonesia.
A bicyclist crosses the median of a busy highway in Bandung, Indonesia.
Getty Images
Traffic passes by a median lined with flags.
Traffic passes by a median lined with flags.
Getty Images
Traffic passes by a median lined with flags at night.
Traffic passes by a median lined with flags at night.
Getty Images
A red vintage convertible drives down a boulevard in Las Vegas.
A red vintage convertible drives down a boulevard in Las Vegas.
Getty Images
A taxi flows with traffic on a highway in Beijing, China.
A taxi flows with traffic on a highway in Beijing, China.
Getty Images
A traffic patrol officer directs traffic on a city street in Beijing, China.
A traffic patrol officer directs traffic on a city street in Beijing, China.
Khan Academy
SAT Prep: Test 1 Section 9 Part 2
On problems 5-8 of the practice SAT video series (page 424 of The Official SAT Study Guide), Sal demonstrates several different ways to solve each problem in an efficient and timely manner. Students will appreciate the ways he details...
Khan Academy
SAT Prep: Test 8 Section 2 Part 4
Advising students to become comfortable with the 30-60-90 triangles as an SAT prep skill, Sal finishes this review session with a geometry problem, an algebra problem with fractions, slopes, and median numbers. His tips and test-taking...
Khan Academy
SAT Prep: Test 7 Section 2 Part 1
Sal picks up the pace in this video, going through problems 1-7 on page 774 of The Official SAT Study Guide. Basic algebra, arithmetic, and geometry problems start out this section, allowing students to build up some steam before hitting...
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
Khan Academy: Medians and Centroids: Triangle Medians and Centroids (2 D Proof)
This video shows that the centroid is 2/3 of the way along a median.
Khan Academy
Khan Academy: Medians and Centroids: Triangle Medians and Centroids
This video proves that the centroid of a triangle is two-thirds the way along a median.