In 1st grade math, my students were learning about fact families of 10. For the lesson, we used empty bottles and tennis balls to set up our own bowling alley in the middle of our room. Early in the week, I sent home a letter to the families asking for them to send in any empty plastic bottles. The families were more than helpful and we ended up with more bottles than you could imagine. (We recycled the extras!) Overall, the activity was very successful and the students had a blast!
Me: "How many pins did you knock down?"
Student: "I knocked down 5!"
Me: "How did you know so quickly?"
Student: "Because, there are 5 pins still up and I know 5 + 5 = 10!"