It can be used to teach facts. Facts aren't just facts, they are the context around facts. You can't just learn that steel has a UTS of 500 MPa with a density o

It can be used to teach facts. Facts aren't just facts, they are the context around facts. You can't just learn that steel has a UTS of 500 MPa with a density of 7.8 g/cm^3, while aluminium has a UTS of 50 MPa with a density of 2.8 g/cm3. You could ask students which material is used to build planes, and then discuss which material would be better. At some point, you'll need to introduce the exact figures, but that's a small portion of the lesson. There's a reason why the back page of a textbook can hold most of the facts that the other 300 pages teaches - information and knowledge are mutually inclusive.