Disappointed in the material. It offered very little of what was advertised. Not worth the money for basic classifiers. The information was not well put together and often times very difficult to navigate. The mouse does not work to click on a specific section, you must use the arrow keys to navigate and wastes a lot of time. The classifier pictures I thought would have been great practice if nothing else was going to work, but the students felt the descriptions were not well done and missing important information-like signing about a caterpillar on a tree branch. You simply showed a number one on its side, but didn't explain what that handshape was first and then a caterpillar climbed on it. by not saying what that handshape represented it could have been a branch, a pencil, or anything else connected to that handshape.(anything!) This was found throughout the disc, and I hope it can be cleaned up, updated and produced in higher quality. The information just wasn't consistent. I would only recommend for very new signers who know nothing about classifiers.