When my youngest grandboy was 18 months old, he learned to sing “The Wheels on the Bus.” He knew when to chime in with all the sound words—up and down, beep-beep-beep, swish-swish-swish, waah-waah-waah, and shh-shh-shh. Children, even toddlers like my grandson, have an amazing capacity for learning and for memorizing! Why not use that capacity…