Ellipse Equation Review

Learning Resource Type

Classroom Resource

Subject Area

Mathematics

Grade(s)

9, 10, 11, 12

Overview

In this activity from Khan Academy, students will review their knowledge of ellipse equations and their features: center, radii, and foci. This activity has an embedded video, practice problem with immediate checks for the correctness of answers, an explanation option, and more practice choice at the end of the lesson. This review can be assigned to Google Classroom

Khan Academy is a free resource for teachers. Teachers can sign up for a free account to access additional resources.

Mathematics (2019) Grade(s): 09-12 - Precalculus

MA19.PRE.31

Graph conic sections from second-degree equations, extending from circles and parabolas to ellipses and hyperbolas, using technology to discover patterns.

UP:MA19.PRE.31

Vocabulary

  • Hyperbola
  • Ellipse
  • Degenerate conic
  • Focus (foci)
  • Latus rectum (focal distance)
  • Major axis (transverse axis)
  • Minor axis (conjugate axis)
  • Eccentricity
  • Asymptote
  • Directrix
  • Locus

Knowledge

Students know:
  • Vertex form of a parabola.
  • Standard form of a circle.
  • Vertex and axis of symmetry of a parabola.
  • Completing the square.
  • Factoring a quadratic function.

Skills

Students are able to:
  • Graph equations of parabolas.
  • Graph equations of circles.
  • Graph equations of ellipses.
  • Calculate eccentricities of ellipses.
  • Graph equations of hyperbolas.
  • Classify a conic section using its general equation and/or its discriminant.

Understanding

Students understand that:
  • A conic section is a graph of an equation of the form Ax2 + Bxy + Cy2 +Dx +Ey + F = 0.
  • The only conic sections that are functions are parabolas that open upward or downward, previously learned as quadratic functions and hyperbolas that are written in the form of a rational function.
  • Using algebra to manipulate the equation of a conic section, particularly the method of "completing the square"" can be used to determine the parts and properties of its graph
Mathematics (2019) Grade(s): 09-12 - Precalculus

MA19.PRE.37

Use trigonometric identities to solve problems.

UP:MA19.PRE.37

Vocabulary

  • Identity
  • Even and odd function
  • Sine
  • Cosine
  • Tangent
  • Cosecant
  • Secant
  • Cotangent
  • Fundamental Identities
  • Reciprocal Identities
  • Quotient Identities
  • Pythagorean Identities
  • Sum and Difference Identities
  • Double-Angle Identities
  • Half-Angle Identities

Knowledge

Students know:
  • Applications of the Pythagorean Theorem.
  • Operations with trigonometric ratios.
  • Operations with radians and degrees.
  • Even and odd functions.

Skills

Students are able to:
  • Use and transform the Pythagorean Identity.
  • Simplify trigonometric expressions.
  • Verify trigonometric identities.
  • Write the sum and difference identities for sine, cosine, and tangent.
  • Use sum and difference identities to findexact values of a trig function.
  • Derive the double angle and half angleidentities.

Understanding

Students understand that:
  • The fundamental identities allow functions to be written in terms of other functions. Then algebraic methods can be applied to simplify expressions or to match it with another expression
  • Given the trig values for a pair of angles, identities can be used to find the trig values of the sum or difference of the given angles.
  • Given the trig values for an angle, identities can be used to find the trig values for twice and half the angle.

CR Resource Type

Learning Activity

Resource Provider

Khan Academy

License Type

Custom
ALSDE LOGO