I was excited with the opening video. It was exciting and I was eager to try to the experiment, but then it stopped. For a 2nd-3rd grade student, you just lost them. Include a video demonstrating the experiment. The directions on how to complete the project were easy enough for an adult to follow, but the size of print and so many steps to read on one page will discourage a child from completing the task. The vocabulary on the task was a little advance for this age group. I like the extension activities. Science experiments like these are fun, but make it practical. How does this affect us in the world? Why is this important to know? I want my students to connect science with life and not just play with science.