Objective
By the end of this 20-minute Math lesson on Khan Academy, you will be able to understand and solve basic algebraic equations with variables.
Materials and Prep
- Computer or tablet with internet access
- Basic understanding of arithmetic operations (addition, subtraction, multiplication, division)
Activities
- Activity 1: Introduction to Variables
Start by watching a short video on Khan Academy that explains what variables are in math. Then try solving simple equations with variables like x and y. - Activity 2: Solving Equations Practice
Work on a set of practice problems on Khan Academy where you have to solve equations by isolating the variable. Don't forget to check your answers! - Activity 3: Equation Puzzles
Challenge yourself with some equation puzzles where you have to figure out the value of the variable by using your algebraic skills.
Talking Points
- What are Variables?
"Variables are like empty boxes in math that can hold different values. We use letters like x and y to represent these unknown values in equations." - How to Solve Equations?
"To solve an equation, we need to perform the same operations on both sides of the equals sign to isolate the variable. Remember, what you do to one side, you must do to the other!" - Why Check Your Answers?
"Checking your answers is important in math to make sure you didn't make any mistakes. You can substitute your solution back into the original equation to see if it works."