Authentic Lessons for 21st Century Learning
In this lesson, students will investigate how to use systems of equations to solve real-world problems. This is a great lesson to wrap up a unit on systems of equations, after students have become familiar with solving systems using any method. This lesson will connect solving systems to real-world... Read more »
Created by: K20 Center
Date Updated: October 2nd, 2023
Linear Systems of Equations
This lesson asks students to apply their previous knowledge of solving systems of equations to real-life contexts, including basketball games. Read more »
Created by: Amber Stokes
Date Updated: February 28th, 2024
Systems of Equations
This lesson introduces students to properties of real numbers, equality, and inverse operations for solving linear equations. The objective is for students to understand how to isolate a variable in two-step equations by applying properties of rational numbers. In the next lesson, students will advance... Read more »
Created by: Matthew McDonald
Date Updated: July 16th, 2025
Solving Two-Step Equations
This lesson focuses on the properties of real numbers, properties of equality, and inverse operations to help students deepen their understanding of solving linear equations. Students will learn to isolate variables and apply this knowledge to more complex problems. By the end of the lesson, students... Read more »
Created by: Brittany VanCleave
Date Updated: July 16th, 2025
Solving Multi-Step Equations
This lesson focuses on solving literal equations by building on the equation-solving knowledge students developed in Parts 1 and 2 of the Journey of the Isolated Variable series. Students will deepen their understanding of rearranging multi-variable equations to isolate a specific variable. By the end... Read more »
Created by: Amber Stokes
Date Updated: March 7th, 2025
Literal Equations
In this lesson, students build on prior knowledge of solving equations to learn how to solve absolute value equations. Students then compare and contrast four types of equations including two-step, multi-step, literal, and absolute value equations. This is the fourth lesson in the four-part "Journey... Read more »
Created by: Amber Stokes
Date Updated: November 11th, 2024
Absolute Value Equations
“Junk Food Junction: What’s Your Function?” breaks down the components of a function and the relationship it has in real-world contexts. The goal is to identify different variables of the given function, either by equation or graph. Participants will identify domain, range, independent, and dependent... Read more »
Created by: Brittany VanCleave
Date Updated: May 29th, 2025
What is a Function?
Students will physically model the concept of simplifying algebraic expressions as a class then apply this knowledge to written expressions. This is a great lesson for both introducing, as well as remediating, the concept of combining like terms. Read more »
Created by: K20 Center
Date Updated: August 8th, 2025
Simplifying Algebraic Expressions
This is a lesson for Law of Cosines, which also connects Law of Sines and Law of Cosines to map triangulation. Students will receive a brief introduction to Trig Pillars: a tool used in the United Kingdom in the mid-20th century to help with mapmaking. Then, they will go through an informal proof of... Read more »
Created by: Michell Eike
Date Updated: September 16th, 2024
Triangulation and Mapping
In this lesson, students will discover how a given side, side, and angle could result in 0, 1, or 2 triangles. They will then learn the Law of Sines and use it to find missing side lengths and angle measures. This lesson is intended to be taught before the Law of Cosines lesson and after students learn... Read more »
Created by: Michell Eike
Date Updated: April 3rd, 2024
AAS, ASA, SSA
In this lesson, students will explore the concepts of sampling distributions and the central limit theorem through hands-on activities and practical application in the Deadly Distribution digital game-based learning (DGBL) module. Read more »
Created by: William Thompson
Date Updated: June 18th, 2024
Sampling Distribution and the Central Limit Theorem
In this lesson, students will build on their knowledge of parallel lines by incorporating perpendicular, vertical, and horizontal lines. The goal is for students to understand the characteristics of different types of lines and then apply their knowledge to design a structure as an architect might.... Read more »
Created by: Brittany VanCleave
Date Updated: September 12th, 2024
Parallel, Perpendicular, Vertical, and Horizontal Lines