By Nicole Slaughter GrahamOriginal Source: washingtonpost.comOn a particularly sticky, Florida summer day, I watched as my son, then 8 years old, glided on his scooter up and down the ramps of the skate park. Occasionally he’d stop and observe the other kids sail across the pavement, flipping the base of their scooters around as they ascended higher than the confines of the park’s ramps.My son, watching one boy in particular, asked me to find out how he was able to kick off the steepest ramps with such ease. My son wanted to do...click here to continue reading