Your students will beg for more circuits after they work these 24 linear inequalities! Students enter the circuit on the easiest problem, solve it, and then hunt for the answer to advance in the circuit. If everything goes smoothly (which it won't because I weave in problems that address common student errors and misconceptions), the students will get back to beginning. Great for cooperative learning, differentiated instruction, homework, classwork, you name it! Enjoy the sounds of your students talking about math as they work to complete the circuit!
This is one of the first circuits I ever wrote -- let me know if you find any mistakes and I will fix and re-post!