Matt filled up the sandbox and within minutes, Isaac was in it and had buried his legs entirely under the sand.
Noah tends to take a more conservative approach. He walked around the sandbox, inspected it, put his hands in it, watched Isaac bury himself, then eventually put his feet in and got sandy. A short while later, he was sitting in the sand and having a great time with the sand toys. The next day, Noah was lying in the sand and pretending he was in a swimming pool.
Two very different approaches for two very different personalities!