An interesting science class

Today my teacher Mrs. Evans was not here, Mr. Monaghan who is from secondary school was coming to teach our science class. He taught us how the weight affected the flight time. We needed ten paper helicopters per group. We had four people in the group,  so two people needed to make six and other two needed to make four.  The number one helicopter didn’t need paper clip, and the number two needed one , the  number three needed three and so on. After we made it ,we did an experiment on the playground. We found out that the more paper clip it had, the less time it stayed in the air. We did the result when my Mum came with a birthday cake for my birthday and  I shared it with my classmates and some teachers. It was so delicious that everybody enjoyed it and someone asked me for another piece.

In the evening, I ate another birthday cake and had a small birthday party in a chinese restaurant. And I got a brilliant birthday present from my parents, which is a set of golf clubs. Hoory, I have seven clubs now and I can play better than before.

（By the way, I wrote this diary two weeks ago. My Mum helped me to move here today. So my birthday is not today.)