What is first spell Ron tries but fails on the train?

In "Harry Potter and the Philosopher's Stone," Ron Weasley attempts to use the spell "Wingardium LeviOSa" to levitate a stack of books on the Hogwarts Express. However, he struggles with the pronunciation and wand movement, leading to a failed attempt. Hermione Granger later demonstrates the correct way to perform the spell, showcasing her proficiency in magic.