Instructional Video9:26
Khan Academy

SAT Prep: Test 2 Section 3 Part 3

For Students 9th - 12th
Covering geometry, linear equations, and mathematical patterns, Sal discusses problems 9-12 on the practice SAT. His easygoing manner and clever calculations will keep students' interest far longer than reviewing SAT questions from a...
Instructional Video9:19
Khan Academy

SAT Prep: Test 2 Section 6 Part 3

For Students 9th - 12th
Sal's dedication is clear in this video, which takes place on Thanksgiving Day. The problems focus on algebra (averages and linear equations) and geometry (perimeters and angles). Viewers beware: Sal makes a self-professed error on...
Instructional Video
Khan Academy

SAT Prep: Test 3 Section 2 Part 2

For Students 9th - 12th
Problem number 6 on the practice SAT involves solving for a distance on a line, which Sal does in about 2 minutes. His method of efficiently (and correctly) solving problems is an excellent model for students who tend to panic at the...
Instructional Video
Khan Academy

SAT Prep: Test 7 Section 2 Part 1

For Students 9th - 12th
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...
Instructional Video
Khan Academy

SAT Prep: Test 8 Section 2 Part 4

For Students 9th - 12th
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...
Instructional Video
Khan Academy

SAT Prep: Test 3 Section 4 Part 1

For Students 9th - 12th
Modeling quick thinking and efficient problem solving, Sal works through the linear equation in problem 1 in just over 30 seconds. This video, which covers problems 1-5 on page 530 of The Official SAT Study Guide, also shows students how...
Instructional Video
Khan Academy

SAT Prep: Test 7 Section 2 Part 2

For Students 9th - 12th
Test-takers who have a hard time transitioning between math skills will find this video very helpful, as Sal moves quickly through increasingly complicated algebra and geometry problems. Not only are his math techniques top-notch, but...
Instructional Video
Khan Academy

SAT Prep: Test 3 Section 8 Part 3

For Students 9th - 12th
Geometry and algebra are equally represented in this video, which covers problems 10-14 on the practice SAT. As always, Sal is the expert of quick, efficient ways to solve problems - especially helpful for students who have a difficulty...
Instructional Video
Khan Academy

SAT Prep: Test 8 Section 5 Part 1

For Students 9th - 12th
Launching into another practice session from The Official SAT Study Guide (page 855) Sal wastes no time in solving problems 1-6, which involve basic algebra and geometry. He encourages efficient problem solving, noting that on the first...
Instructional Video
Curated OER

SAT Prep: Test 4 Section 4 Part 2

For Students 9th - 12th
Problems 7-11, which involve both geometry and algebra problems, allow students to practice transitioning between skills. Sal takes time to explain the process of each problem so that students will understand the test strategies as well...
Instructional Video
Khan Academy

SAT Prep: Test 7 Section 5 Part 4

For Students 9th - 12th
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...
Instructional Video
Khan Academy

SAT Prep: Test 1 Section 3 Part 4

For Students 9th - 12th
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....
Instructional Video10:12
Curated OER

Word Problem Solving Plan 1

For Students 7th - 11th
Word problems are a problem no more with this helpful and informative video. Sal demonstrates different ways to solve typical algebraic word problems (and one geometry problem), especially how to translate the word problem into an...
Instructional Video8:49
Khan Academy

SAT Prep: Test 2 Section 6 Part 5

For Students 9th - 12th
Addressing problems 15-16 on the practice SAT, Sal draws the diagram necessary for solving the geometry problem in number 15. After solving for the area of the triangle, he goes on to the quadratic equation in number 16, taking care to...
Instructional Video8:38
Khan Academy

Test 3 Section 2 Part 5

For Students 9th - 12th
Both algebra and geometry problems are featured in this SAT practice video. Students who struggle to transition between skills on tests (average mean, then diameters and pi, then positive integers) would benefit from Sal's deft handling...
Instructional Video4:21
CK-12 Foundation

Area and Perimeter of Rhombuses and Kites: Lesson

For Students 6th - 10th Standards
Flip the triangles up and create a parallelogram. Using the idea of transformations, the video develops the area formula for rhombi and kites. The segment of an extensive geometry playlist uses the formula to find the areas of different...
Instructional Video6:26
CK-12 Foundation

Basic Geometric Definitions: Lesson

For Students 4th - 8th Standards
Build up the basics of geometry, one point at a time. The segment in an extensive playlist on basic geometry provides the definitions of the essential building blocks of geometry. Using drawings, the video shows examples and descriptions.
Instructional Video4:10
Socratica

Pythagorean Theorem Proof

For Students 7th - 10th Standards
No geometry class is complete without a proof. A short video in the Socratica Geometry playlist covers an algebraic proof of the Pythagorean Theorem. Simplifying an equation with two equivalent expressions for the area of a square leads...
Instructional Video2:35
CK-12 Foundation

Using Ratios: Lesson

For Students 6th - 11th Standards
How do ratios work in geometry? The video answers just this question in order to help your class master an important skill. Using the concept of ratios, this segment in an extensive geometry playlist applies ratio reasoning to...
Instructional Video5:05
CK-12 Foundation

Proportions: Lesson

For Students 6th - 11th Standards
Proportionally, one doesn't see much of cross multiplying in geometry. The portion of extensive playlist on geometry reviews proportions. Using properties of equality, the video shows why cross multiplying works for proportions.
Instructional Video5:54
Bozeman Science

Why Are Cells Small

For Students 9th - 12th Standards
Does cell size have something to do with magic? No, but their size has everything to do with geometry. The video explores an analysis of two cylinder's volumes, showing how surface area affects volume. Learners see how in biology,...
Instructional Video2:25
Socratica

Introduction to Polygons

For Students 6th - 10th
How did polygons get their name? A brief video in the Socratica Geometry series explains the naming convention for polygons. Of course, this occurs after defining the term polygon.
Instructional Video4:04
Socratica

Introduction to the Pythagorean Theorem

For Students 7th - 10th Standards
Use a new medium to investigate an old mathematical theorem. Young mathematicians learn about the Pythagorean Theorem from a YouTube video in the Socratica Geometry playlist. They first see if a set of values is a Pythagorean triple and...
Instructional Video4:14
Socratica

How Do You Find the Center of a Circle?

For Students 9th - 12th Standards
The center of the circle is the center of attention for the resource. A brief video in the Socratica Geometry playlist shows how to find the center of a circle not on the coordinate plane. The method here is to construct the...

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