Tricycles.—Simple mathematics proves that it takes 50% more effort to balance on a tricycle than on a bicycle.
Today is World Book Day. You could celebrate with a book.
Edited by H. Albertus Boli, LL.D.
Tricycles.—Simple mathematics proves that it takes 50% more effort to balance on a tricycle than on a bicycle.
Today is World Book Day. You could celebrate with a book.