While information can be remembered if taught through books and lectures, true understanding and the ability to use knowledge in new situations requires learning in which children study concepts in-depth, and over time and learning that is founded in direct experience. Therefore, the justification for hands-on learning is that it allows students to build understanding that is functional and to develop the ability to inquire themselves, in other words, to become independent learners. Have her read about puddles. Later, ask her to talk about the puddle. Stomp, splash, and swish.
Float leaves on it.
Drop pebbles into it and count the ripples. Measure the depth, width, and length of it. Test the pH. Look at a drop under a microscope. Measure 250 mL of puddle water and boil it until the water is gone. Examine what is left in the container.