Andrew Graham Frame is a retired chemical engineer who encourages young people to explore science careers. He grew up in Toronto, Ontario, Canada, and now lives in Sarnia, Ontario, with his wife, Bernice. This is the third book in a series.

One day, Ein Stein tells his parents why stones sink, so they come up with the name Ein Stein for this intelligent chipmunk. Ein Stein's parents tell him that he is now named for the famous scientist. Ein Stein is a cute play on words for a chipmunk's name. Ein is determined to find a way across the busy road to the peanut farm.

First, he decides that the road is too busy, so he thinks of the gently flowing river that runs along the property. He then draws plans for a grand boat that will carry him to the peanut farm. But the current is too fast for the small boat, and he must head home before he loses his life and his boat. The next day he tries paddling closer to the stream's edge, but again, no go. Then his father tells him a story about a knight who was hiding in a small hut and watched a spider build its nest over and over until it was just right.

So, Ein doesn't give up. The next day he decides to build a bridge. He draws a plan, but after trying to build it, the sticks break. He goes home. The next day he tries again. Ein doesn't give up on his dream; nor does his father give up on his son, but he continues to help Ein and encourage him in his endeavors.

This is a great 4-star book for children who love to think and build. It's a fantastic lesson in never giving up, keep trying, and don't let go of your dreams!