My ds loved the science in BHFHG when we did it years past.

It is very difficult to do science in a living book way, but BHFHG does it so well. By pointing out links between history and science, my ds learned to see science everywhere around him, rather than to think of it as a separate subject. This has led to him doing many science experiments just on his own, to test out what he thinks may or may not happen. For example, when moving our wood pile, he devised a ramp and finished the job in a fraction of the time it would have taken otherwise. When we did an egg toss, he tried to determine which eggs would break more easily, the ones at room temperature we'd set out earlier, or the ones in the fridge. (The ones in the fridge did better, BTW

) And he talks about these simple experiments he's trying, as if he were a scientist attempting a grand experiment.

If he were just learning science from a textbook, he'd have had no idea (nor probably the interest or inclination) to set up his own experiments to try. By studying people's lives and how they used science to live - to SURVIVE really, makes science seem so much more real and important than just asking questions and giving answers to them. Not to mention, any time you study a person and get to know them well, you remember them, naturally retaining the information better - including why they were passionate about science, how it impacted their lives and the people around them, and how science can be a passion of people's for even an entire lifetime.
For example, Wyatt STILL (2 years after doing BHFHG) loves birds and remembers John Audubon. In fact, we just got a book from the National Audubon Society, and he said, "Mom, don't you remember reading about John Audubon? Look how his work lives on yet today. That's pretty amazing." We have bird calling things, bird feeders, bird books, and my ds is just avid about watching birds outdoors. He even wrote often about them in his poetry for PHFHG, and continues to love to draw them in CTC for his notebooking. I could go on about the other books as well, but it would be the same type of stories.
Doing science with living books makes a mark on dc's memory. It makes them see THEY can be scientists, right NOW. They can be the ones to have scientific theories to test out, have questions they want answers to that they can set up experiments to find answers to, and can appreciate all of the scientific knowledge we have today because of those passionate about it who have gone before us. In short, science has meaning. It is not just a bunch of facts to memorize, nor is it meant to be something you simply ingest a question, an experiment that answered the question, and a rule. Instead, science is everywhere around us, and curiosity, a willingness to experiment with answers even if you might fail, and a passion for solving problems is often what makes a great scientist - who knows, could make the next inventor one of our own dc because they'll have learned to think like a scientist. An almost impossible ideal to convey with science textbooks. I've learned over the years that a living book choice is ALWAYS the best way to teach something if I want my dc to retain anything of substance or worth over time anyway, so BHFHG does that for me already - even within science.

I think this is a good question, and thank you for asking it!
In Christ,
Julie