This was designed for a fourth grade light and sound unit, with some simple interactive notes on both that include important vocabulary and some examples. There is NOT reading material included; the notes are designed to go along with a teacher lesson or almost any text. There is a carousel activity included with 12 different questions; I like to post them on chart paper so each group can answer with plenty of space. There are also 8 light center experiments (materials are listed for each) and a generic sound experiment page so you can use whatever you have available. I use it with water glasses filled at various levels, "Telephone" cups, cellophane strips to blow on, etc. An optical illusion powerpoint is included as well, and a unit test with a key. This is interactive and will require some up front preparation, but then the kids go to town and you can sit back and watch!