What are some things i can do to get in shape before school starts?

summer vacation just started and i want to lose a few pounds before school starts (i'm in 9th grade) in august. i've already started eating a lot healthier - i eat a lot of carrots, berries, lima beans, bananas, asparagus, onions, tomatoes, unsweetened almond milk, oranges, apples, salads with different vegetables maybe with a little grilled chicken and olive oil for dressing, plain oatmeal with cinnamon, canned tuna in water, drinking a lot of water and unsweetened tea, etc. (just to give you an idea of what i eat). i was wondering what else i can do and what exercises are good. thank you. :-)