This activity is a great review of systems of linear equations, especially closed or on the Valentine's Day.
The students will solve systems of equations written on hearts, then hang the heart on a suspended red piece of yarn, just like the images show in the Preview of this lesson. The goal is to attach all four hearts on the chain of love. It's a team work and it's a differentiated activity for Tier 1,2,3 students.
Note: Based on individual request, I could replace the systems of equations from these hearts with whatever math topic you are teaching at the moment for the same price.