1.6.6 Lesson Summary

In this lesson, you learned how to:

• Tell whether two expressions are equivalent and explain why or why not.
• Identify the moves that can be made to transform an equation into an equivalent one.
• Explain what it means for two equations to be equivalent, and how equivalent equations can be used to describe the same situation in different ways.

Here are the activities that helped you reach those goals:

• 1.6.1 Exploring Equivalent Expressions  
  • In this activity, you substituted values into equivalent expressions to show they are equivalent. 
• 1.6.2 Expressing Relationships as Equations
  • In this activity, you wrote equivalent equations given different relationships.
  • 1.6.2 Self Check
  • 1.6.2 Additional Resources 
• 1.6.3 Exploring Related Equations
  • In this activity, you identified changes that were made to create equivalent equations then determined if other equations were also equivalent after certain moves were made to the equation.
  • 1.6.3 Self Check
  • 1.6.3 Additional Resources 
• 1.6.4 Recognizing Related Equations
  • In this activity, you determined which equations in a given group were all equivalent to each other.

After these activities, you completed the following practice:

• 1.6.5: Practice