We are working on a unit about measurement in math this week. We are trying to estimate non standard items. In the past I have had students orally voice their predictions before we measure. Today we used our iPods. We have an app called Glow Doodle.
"How many footballs wide is this football field? Write it on you iPods and show me your prediction."Kids were actively engaged the whole time! We stopped about half way through our counting to decide if we wanted to revise our predictions.