yesterdays lesson we had went out for a practical. we all were in a group of fours and I had grouped with my friends. we were set to measure our throws on discus. my distance throwing the discus was 17.5 metres and my other friends had gotten 17 metres, 15 metres and 19 metres. we put maths with this because we had measured out throws with a measurement ruler. I learnt how to use a discus properly from my friend Conrad