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...
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.
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.