请帮我看一下英语作文＜Last weekend>,有没有错误.

请帮我看一下英语作文＜Last weekend>,有没有错误.
Last weekend I was very busy ,but I thought it is a good weekend .On Saturday morning ,I went to have a Maths lesson .Then,I visited my grandmother at non.We had lunch at her home .She cooked my favorite food,fish!After lunch ,I played with my cousin .We flew kites and rode bikes in the park.At night,I slept in grandma's home.
My aunt and I climbed the mountain on Sunday morning .We arrived the top at thirty to eight.There was so cool.We all were hungry.So we went to have breakfast .In the afternoon I had a Chinese lesson.After class,I went home and watched TV.
It is really a busy weekend.I was very happy .