This lesson has everything you need to teach a "Thin Slicing" lesson on determining if a linear equation has one solution, no solution, or infinitely many solutions (8.EE.7a) for 8th grade using the Building Thinking Classrooms strategies for teaching math created by Peter Liljedahl. If you have been looking to implement the Building Thinking Classrooms model of instruction, but don't know where to start, this is a great resource for you.

This lesson includes the following materials:

• Description of how I run a "Thin Slicing" lesson using Vertical Non-Permanent Surfaces in my own classroom.
• 11 Full-Size Task Cards on finding the number of solutions in a linear equation.
• Answers for all Task Cards.
• "Notes To My Future Forgetful Self" Student Notes Template.
• Student Notes answer key.
• "Check Your Understanding" student Exit Ticket.
• Exit Ticket answer key.

This lesson will help your students learn how to determine if a linear equation has one solution, no solution, or infinitely many solution. This lesson starts with a very low floor to encourage access for all students, and builds up the rigor in "thin slices" until it reaches a high ceiling with challenging extension questions. Once complete, students can use the provided notes template to record their thinking, as well as a "Check Your Understanding" exit ticket to give you and your students formative assessment feedback on how they are understanding the topic.

This lesson is the 3rd in a series for 8th grade equation solving. The two previous lessons are:

1. Solving Equations "Thin Slicing" Lesson: Grade 8

2. Equations With Variables On Both Sides "Thin Slicing" Lesson: Grade 8

Please consider using the previous two lessons before trying this one.

If you enjoy this product, please leave a review and check out my other products. I will be adding more Thin Slicing lessons in the future based on this model.

If you would like to know more about how I use Building Thinking Classrooms in my own class, check out my blog. I am also creating and refining more thin slicing lessons, so follow my store or check back regularly to see what's new.

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