Keeping a writing and sketchbook can help kids retain more of what they see and experience over the summer. A small notepad that can fit into a backpack or pocket will work well.
The act of writing about and drawing pictures of one or two things that your child experienced during a day can be help your child reflect on what he or she found interesting.
Sketching as well as writing can help your child think visually as well. You will also be surprised at what your child notices, whether on the road or at home.