This scientist used math to find the best way to turn a notebook page into a bookmark. Here's the easy way to do it.

Paper craft will provide you unique first page design of your notebook. Handcrafted cover page using weaving paper is a great diy project to impress your friends! #diyideas #diy #diycraft Sheet A4 ...

Two math-notebook pages recently authenticated as belonging to Abraham Lincoln suggest the 16th president, who was known to downplay his formal education, may have spent more time in school than ...