Paper Aeroplanes - Measurement

In maths I have been learning about Measurement. I have been learning how to estimate and Measure. I made a paper plane. My teacher marked out a runway with a measuring tape. First I had to estimate how far my plane would go. I would estimate the length, it actually flew it. My second throw I estimated 3m, it actually flew 5.6m. I found hard making the planes I enjoyed throwing my fast plane.