Lesson Plan
Curated OER

Quadratic Equations and Binomial Square Theorem

For Teachers 9th - 11th
Students factor quadratic equations. In this algebra lesson, students apply the binomial square theorem to solve quadratics. They complete the square and use the complex number system to solve for the roots.
Lesson Plan
Curated OER

Fences and Posts

For Teachers 5th
Fifth graders use Geoboards to demonstrate how shapes can be made by looping the rubber bands over the nails. They make a triangle on their Geoboards. At least one side of the triangle should be either horizontal or vertical. The picture...
Lesson Plan
Curated OER

Quadratics Introduction

For Teachers 5th - 8th
Students investigate quadratic functions graphically and algebraically.
Lesson Plan
Curated OER

Vectors Via the Calculator

For Teachers 8th
Eighth graders resolve vector problems without the knowledge of math.  In this vectors lesson students with poor math skills get a chance of passing the course. 
Handout
Purple Math

Purplemath: Completing the Square: Deriving the Vertex Formula

For Students 9th - 10th Standards
This resource describes in steps how to derive the vertex formula.
Activity
Texas Instruments

Texas Instruments: From Here to There Applications of the Distance Formula

For Teachers 9th - 10th
In this activity, students' will use a pair of motion detectors to record the cartesian coordinates of a rod moving in a star-shaped pattern and calculate the distances moved between the vertices of the star. They also compare these...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Quadratic Formula

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Use the quadratic formula to solve equations and find the vertex of parabolas.
eBook
Mathigon

Mathigon: Graphs and Networks: Euler's Formula

For Students 9th - 10th
This lesson focuses on Euler's Equation. Any (finite) graph can be constructed by starting with one vertex and adding more vertices one by one. We have shown that, whichever way we add new vertices, Euler's equation is valid. Therefore...
Website
National Council of Teachers of Mathematics

The Math Forum: Quadratic Formulas, Equations, Parabolas

For Students 9th - 10th Standards
Dr. Math here at the Math Forum, in a reply to a student question, helps find the vertex and coordinates of the parabola. The information is somewhat brief, but factual, and worth checking out.
Activity
Analyze Math

Analyze Math: Trapezoid Problems

For Students 9th - 10th Standards
The geometry tutorial examines the area, length, and vertices of a trapezoid. Topics include Heron's formula. The activity has several examples with detailed solutions.
Handout
CK-12 Foundation

Ck 12: Algebra: Solving Quadratic Equations Study Guide

For Students 9th - 10th Standards
This comprehensive study guide highlights the main terms and formulas needed to review solving quadratic equations. Examples are included.
Unit Plan
Purple Math

Purplemath: Conics: Hyperbolas

For Students 9th - 10th Standards
A three-part tutorial that discusses the basic terms, definitions, and formulas related to hyperbolas.
Handout
National Council of Teachers of Mathematics

The Math Forum: Defining Geometric Figures

For Students 5th - 8th Standards
This site provides an in-depth definition of a two-dimensional figure and a three-dimensional figure. Related terms include arcs, vertices, polygon, and many more.
eBook
Mathigon

Mathigon: Graphs and Networks: Parties and Dating

For Students 9th - 10th Standards
This lesson uses handshakes at a party to explain complete graphs, when every vertex is connected to every other vertex. It shows how a formula was created to calculate the number of edges.
Unit Plan
Wolfram Research

Wolfram Math World: Tetrahedron

For Students 9th - 10th
This math site defines a tetrahedron, gives reference to the Platonic solid, and gives views from varying perspectives. It also provides formulas for veritices of a tetrahedron lieing along the the positive X axis, formulas for area,...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gpe, N Rn, F Tf Coordinates of Equilateral Triangles

For Teachers 9th - 10th
In this task, students are asked if there is an equilateral triangle ABC where two vertices are on the x-axis, and all vertices have integer coordinates. Aligns with G-GPE.B, N-RN.B, and F-TF.C.9.
eBook
Mathigon

Mathigon: Geometry: Polygons and Polyhedra: Polyhedra

For Students 9th - 10th Standards
This lesson focuses on polyhedra; a polyhedron (the plural is polyhedra) is a 3-dimensional solid object that is made up of polygons. Euler's Polyhedron Formula: In every polyhedron, the number of faces (F) plus the number of vertices...
Handout
CK-12 Foundation

Ck 12: Algebra: Graphing Quadratic Equations Study Guide

For Students 9th - 10th
This comprehensive study guide highlights the main terms and formulas needed to review graphing quadratic equations. Examples are included.
PPT
Sophia Learning

Sophia: Coordinate Geometry of Rhombi

For Students 9th - 10th
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rhombus in a coordinate plane.
PPT
Sophia Learning

Sophia: Coordinate Geometry of Trapezoids: Lesson 3

For Students 9th - 10th Standards
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a trapezoid in a coordinate plane. It is 3 of 4 in the series titled "Coordinate...
PPT
Sophia Learning

Sophia: Coordinate Geometry of Parallelograms: Lesson 4

For Students 9th - 10th Standards
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a parallelogram in a coordinate plane. It is 4 of 6 in the series titled "Coordinate...
Activity
Texas Instruments

Texas Instruments: Looking for Mr. Right Triangle

For Teachers 9th - 10th Standards
Navigator Activity: This is a review of the right triangle in the coordinate plane. Given two lines (2 really nice ones) the students write the equation of the 3rd line to create a right triangle. They find the vertices of the triangle...
Handout
Math Is Fun

Math Is Fun: Cone

For Students 9th - 10th Standards
The resource investigates a cone. Students learn about surface area, volume, and different types of cones. Definitions, animations, formulas, and practice questions are included.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Identification of Quadratic Models

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Understanding the equations of parabolas