I can recommend the book by John Vacca that came out a while back, but it lacks biology and chemistry problems to some extent. A website would serve as an online bank.
Buy The World’s 20 Greatest Unsolved Problems by Vacca, John R. (ISBN: 9780131426436) from Amazon’s Book Store. Everyday low prices and free delivery on eligible orders.
ZipKit is a DIY Classic Wooden Boat Kit. CNC precision machined. Ready to assemble 14'-4" Wood Runabout. The "Zip" is a true classic. Designed in 1954 by Glen L. Witt for the amateur boat builder. Fun to build !
I can recommend the book by John Vacca that came out a while back, but it lacks biology and chemistry problems to some extent. A website would serve as an online bank.
Try this!
https://www.zzzipkit.com/
Found this online, great idea…