While exploring the concept of transversals, Sal discusses corresponding angles, congruent angles, and opposite/vertical angles. He provides a thorough summation of these mathematical concepts. It is the first installment in a series...

This resource explores parallel lines and requires students to practice calculations and analyze angles. By asking viewers to decide whether two lines are parallel based on the information given, this second part of the parallel lines...

This lecture explores finding the area of each of the triangles created by drawing two diagonal lines through a rectangle. It provides a detailed explanation of how to use a formula to solve the given problem. Tip: Use this for test...

This video is the first installment in a series devoted to exploring Heron's Formula. It is a high-level experience that delves into proof using algebra. It demonstrates a step-by-step process for finding the area of a triangle using...

Picking up where the prior installment in the series on HeronÕs formula ended, Sal provides a more detailed explanation.

This lecture, the second in a series on the Pythagorean Theorem, delves into more complex problems. Primarily, it examines the process of finding the value of a hypotenuse. It is beneficial because the example problem is one in which the...

Although a rather complicated topic, this video clearly explains the concept of solving problems involving similar triangles. It employs problem-solving to determine whether two figures are similar triangles. In addition, it provides...

A motivating activity is coupled with the use of algebra to explore the process of identifying the value of an angle. It feels like magic when Sal shows the solution to the final problem. Also, it would be worthwhile to consider using...

Let's meet in the middle. As part of a comprehensive playlist on basic geometry, the video introduces the definitions of a midpoint and segment bisector. The resource shows a graphical approach to finding the midpoint of a line segment...

Seeking to derive the formula for the volume of a square pyramid, geometry learners construct six square based pyramids that, when pieced together properly, form a cube. Two short videos demonstrate the relationship...

While physics is known for the math connections, chemistry is know for geometric connections. The 11th video in the series discusses how to determine the molecular structure of bonded atoms in a 3-D plane using steric numbers.

Float like a butterfly, think like a bee! Build a huge hive, hexagonally! Find out the reason that hexagons are the most efficient storage shape for the honeybees' honeycombs. This neat little video would be a sweet addition to...

Vocabulary is key to understanding geometry, so start your learners out on the right foot! Scholars learn how to read and interpret geometric statements with an informative video, which uses the idea of locus to create the...

Transformations, isn't that geometry? The instructor illustrates how to rotate a shape around a fixed point on a graph, keeping the shape the same size.

Geometry problems on the SAT are often the most difficult for students to solve, let alone master. Focusing on several geometry-related skills (as well a few algebra problems), Sal makes this lesson a valuable resource for viewers who...

Sal completes problem 20 from this session of the practice SAT (page 796). He draws the parallelogram necessary for solving the problem, and spends a good amount of time explaining the process and method behind the answer. This video is...

Putting the finishing touches on this practice session, Sal takes students through an algebra problem involving percentages (or decimals, as he prefers) and a geometry problem with equilateral rectangles. Students who need a little more...

The final video of the SAT practice series takes students through increasingly complicated algebra and geometry problems, but Sal works steadily through each mathematical process. At the end of the video he tells students that they are...

Fans of algebra, geometry, and hamsters will enjoy this video, which finishes this practice test with problems 15-16. Sal carefully, methodically, and efficiently takes students through the necessary steps for solving increasingly...

Continuing his SAT review session, Sal explores problems with slopes, linear equations, and congruent angles. He begins problem 10 (geometry) but finishes the problem in the next video.

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...

Help your students get the edge on the SAT with this practice video, which details ways to solve various algebra and geometry problems. Sal finishes problem 18 in this video, changing his pace for understanding, and continues to solve...

Carefully reading word problems is a skill that many students neglect due to time constraints or test anxiety, and Sal models how to do so in this video. Both algebra and geometry are featured in problems 10-12 of the practice SAT.

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...