Another really good way to learn triplets against ordinary notes is to say "nice cup of tea" whilst tapping your hands! Sounds crazy but try this: Think of the rhythm crotchet, quaver, quaver, crotchet. On the first crotchet tap both hands and say nice. On the next quaver tap your right hand and say cup. On the next quaver tap your left hand and say of. On the next crotchet tap your right hand and tea. Repeat this and you will soon be able to play twos against threes.
i don't want to make another thread so i'll ask here:is it worth taking a music theory class in high school? my school has one, im thinking of taking it.description of class: "Music Theory is designed to provide a thorough background in music for those seeking a broad inclusive knowledge of music writing, and improvement in performance through a thorough study of scales, intervals, chords, analysis of music literature, writing and arranging, and ear-training."