Start with the Sun and move outward
Memorize the planets in order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Repeat the sequence aloud several times
Use a mnemonic phrase to remember the order
Write the planets in order from memory
Practice with flashcards
Group the inner planets and outer planets separately
Quiz yourself regularly
Use a song or rhyme to reinforce the order
Review the sequence daily until it sticks