I love the sight for good activities and printables that work well with elementary students. There are good vacation journals and book logs that I have used. Every time I look, there is something new that I didn't see before.
Science popularizer and guest blogger 'Science Bob' Pflugfelder offers parents three experiments - Blobs in a Bottle, the Exploding Lunch Bag, and Film Canister Rockets - to delight and engage young scientists over summer vacation.