Using Bar Models to Solve Equations

This video tutorial teaches how to write and solve equations using a bar model. It begins with an introduction to variables, explaining how they represent unknown numbers. The lesson then sets up a problem involving the cost of a trip, which includes a concert ticket and two passes of equal cost. A bar model is used to visualize the problem, leading to the formation of an equation. The equation is then solved step-by-step to determine the cost of one pass, demonstrating the process of simplifying and solving equations.

What is a variable in the context of equations?

• A type of graph

• A mathematical operation

• A letter or symbol representing an unknown number

• A fixed number

What is the total cost of the trip mentioned in the lesson?

• $52

• $20.50

• $41

• $11

How many passes are included in the trip cost?

• One

• Two

• Three

• Four

What is the first step in solving the equation for the cost of one pass?

• Multiply the total cost by two

• Divide the total cost by two

• Add the cost of the concert ticket

• Subtract the cost of the concert ticket from the total

What is the final cost of one pass?

• $11

• $20.50

• $41

• $25