Good to very good antiquarian condition. Some edge wear. Bumped corners. Expected BOE stamps and dates. Some spots of fading and etc. It seems the younger you are, the more there is to learn. Look at all this stuff!!! How does it work? What's it called? What is it for? Why is it orange? Complete with lesson plans, this little book doesn't do much in the way of answering questions--that's what grown ups are for, after all. It serves to spark the questioning process. And that is what science is all about.