### We found 139 resources with the keyterm pi

Lesson Planet

#### 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....

Lesson Planet

#### SAT Prep: Test 6 Section 7 Part 2

Helping students realize the common missteps in solving the average SAT problem, Sal creates a lens through which students can clearly see the correct and incorrect approach to each type of problem. He points out what a student might...

Lesson Planet

#### 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...

Lesson Planet

#### SAT Prep: Test 3 Section 8 Part 3

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...

Lesson Planet

#### Area of a Circle

A second installment in a series on circles, this production demonstrates the process of finding the area of a circle. As an introductory tool, it is effective. However, it does not explain the reasoning behind the formula because that...

Lesson Planet

#### 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...

Lesson Planet

#### What's an Irrational Number?

This video defines rational numbers. Through the definition and examples, learners should comprehend that irrational numbers are numbers that cannot become simple fractions. The video uses examples of very common irrational numbers, such...

Lesson Planet

#### What is the Formula for the Volume of a Cone?

All you need are a few values to find the the volume of a cone! Watch an informative math video that guides learners through the formula needed, as well as the relationship between the cone's volume and the volume of other...

Lesson Planet

#### How Do You Find the Volume of a Sphere?

The formula for the volume of a sphere is - volume equals four thirds pi times the radius cubed. That's a mouth-full. But if you are given the radius value of the sphere, all you have to do is plug it in and do the arithmetic. Just...

Lesson Planet

#### How Do You Find the Area of a Sector of a Circle?

How do you find the area of a sector of a circle? Use the formula of course. Then all you have to do is plug in the given values and do the math. Make sure you are following the rules of order of operation. The instructor will walk you...

Lesson Planet

#### Test 2 Section 2 Part 5

Both algebra and geometry problems are featured in this SAT practice video. Students who have a hard time transitioning between skills on tests (average mean, then diameters and pi, then positive integers) would benefit from Sal's deft...

Lesson Planet

#### A Slice of Pi

Math pupils, by viewing a video, discover the history of pi and some of the applications of its uses in the world today. They conduct an experiment by measuring the diameter and circumference of various circular objects to calculate...

Lesson Planet

#### Discovering the Area Formula for Circles—Apple Pi

Need an activity that brings your class' understanding of the area formula full circle? The second installment in a two-part series involving geometric calculations further develops the young mathematician's measurement, approximation,...

Lesson Planet

#### What's an Irrational Number?

Lesson Planet

#### How Do You Find the Volume of a Cylinder?

What is the formula to find the volume of a cylinder? Here's the formula - volume equals base times height, and the base of a cylinder is base equals pi times radius squared. If the is a given value for radius, and a given value for...

Lesson Planet

#### SAT Prep: Test 4 Section 2 Part 4

Taking time to thoroughly explain and work through problems 15-16, Sal models careful reading and problem solving. He begins problem 17 but continues it in the next video.

Lesson Planet

#### SAT Prep: Test 2 Section 3 Part 5

Sal takes viewers into the home stretch of this practice test session from The Official SAT Study Guide. Problems 17-18 are algebraic equations, while problem 19 focuses on area in a given figure (with the use of pi).

Lesson Planet

#### 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.

Lesson Planet

#### SAT Prep: Test 5 Section 7 Part 5

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...

Lesson Planet

#### Measuring Circles

Students discover the area of circles. In this circles lesson, students work to find the circumference and diameter of a circle. Students compare the relation of the area of a circle to a square.

Lesson Planet

#### Reference Angles

Learn how to measure the reference angles in degrees and radians. Students find reference angles that are coterminal with a given angle.

Lesson Planet

#### Circles, Circles, Everywhere!

Students explore the concept of circles. In this circles lesson, students use their Ti-Nspire to collect data on various circles of different sizes. Students measure the diameter and circumference of the circles and plot the data in a...

Lesson Planet

#### Factoring Polynomials

In this factoring polynomials activity, 9th graders solve and complete 33 different multiple choice problems. First, they determine the equation that best represents a simplified form after factoring out the GCF. Then, students determine...

Lesson Planet

#### Circles: Radius, Diameter and Circumference

Fascinating discussion regarding the origin of Pi accompanies a detailed explanation of how to find the circumference of a circle. Since this is the first installment in a series on circles, the concept of circumference is separated into...