Activity
CK-12 Foundation

Ck 12: Inscribed and Circumscribed Circles of Triangles

For Students 9th - 10th Standards
[Free Registration/Login Required] Students will move points on a circle to determine the relationships between the inscribed and circumscribed circles of triangles. Click 'Challenge Me' to answer practice questions.
Activity
CK-12 Foundation

Ck 12: Inscribed Quadrilaterals in Circles

For Students 9th - 10th Standards
[Free Registration/Login Required] Students will explore quadrilaterals inscribed in circles with this interactive activity. Click 'Challenge Me' to answer a practice question.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Introduction to the Triangle Area Formula

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to find the area of a triangle using sine.
Unit Plan
CK-12 Foundation

Ck 12: Analysis: Quadratic Formula and Complex Sums

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations when the answers are complex numbers. Students examine guided notes, review guided practice and attempt practice...
Unit Plan
CK-12 Foundation

Ck 12: Polar Form of a Complex Number

For Students 11th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you will learn how to convert complex numbers from rectangular form to polar form. You will also explore the graphs of complex numbers on a polar graph.
Unit Plan
CK-12 Foundation

Ck 12: Earth Science: How Ocean Currents Moderate Climate

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Looks at how ocean currents transfer heat from one place to another.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Laws of Sines and Cosines

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to find missing sides and angles in non-right triangles using the Laws of Sines and Cosines.
Unit Plan
CK-12 Foundation

Ck 12: Earth Science: Effect of Atmospheric Circulation on Climate

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Looks at how atmospheric circulation cells affect the climate of regions.
Unit Plan
CK-12 Foundation

Ck 12: Unit Vectors and Components

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to break down a vector into component vectors and unit vectors.
Unit Plan
CK-12 Foundation

Ck 12: Earth Science: Effect of Altitude and Mountains on Climate

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Studies the effects of altitude and mountain ranges on weather and climate.
Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Multiplication of Rational Numbers

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to multiply rational numbers. Includes examples, videos, and practice questions.
Unit Plan
CK-12 Foundation

Ck 12: Plot Polar Coordinates

For Students 11th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you will learn how to convert and graph complex numbers in trigonometric or polar form using the polar coordinate system, which is similar in some ways to (x,...
Unit Plan
CK-12 Foundation

Ck 12: Biology: Female Reproductive Structures

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Covers female reproductive structures and their functions.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Lengths of Sides in Isosceles Right Triangles

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you'll learn what an isosceles right triangle is, the relationships between the sides of an isosceles right triangle, and how to find the length of an unknown...
Unit Plan
CK-12 Foundation

Ck 12: Earth Science: Weather vs. Climate

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Compares and contrasts the short-term phenomenon of weather with the long-term average of weather, otherwise known as climate.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Pythagorean Theorem and Pythagorean Triples

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Apply the Pythagorean Theorem and its converse. Includes videos, exercises, links to interactive activities, etc.
Unit Plan
CK-12 Foundation

Ck 12: Earth Science: Volcanoes at Hotspots

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Volcanoes can form at hotspots away from plate boundaries. This article discusses hotspot activity and how it leads to volcanism in the oceans.
Unit Plan
CK-12 Foundation

Ck 12: Find Imaginary Solutions: Fundamental Theorem of Algebra

For Students 11th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you will learn about the Fundamental Theorem of Algebra, and how to apply it to various functions. You will also review using the quadratic equation to find...
Unit Plan
CK-12 Foundation

Ck 12: Find Imaginary Solutions

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson, students are finding complex roots of polynomials and applications of the Fundamental Theorem of Algebra. Students examine guided notes, review...
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Resultant of Two Displacements

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Determine the physical description of vector displacement additions.
Unit Plan
CK-12 Foundation

Ck 12: Vector Scalar Product: Vector Multiplied by a Scalar

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to multiply a vector by a scalar, what the resulting quantity is, and how to represent it.
Unit Plan
CK-12 Foundation

Ck 12: Biology: Ecosystems

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Introduction to ecosystems and other ecological concepts.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Limitations of Matrix Multiplication

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson shows you how to determine if two matrices can be multiplied together and explains that the commutative property does not apply.
Unit Plan
CK-12 Foundation

Ck 12: Complex Numbers

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers the powers of i, and adding and subtracting complex numbers, as well as how to plot them in the complex plane. Students examine guided notes,...