Helmets and bicycles. So we have a skate park in town in a public park. Saturday and Sunday mornings, around 9:00am, the 'big kids' are not there yet. So we take the boys on their balance bikes. This week we took them into the 'swimming pool' for the first time on their bikes. They loved it. Saw the 5 year old doing some great experimentation with speeds and the steep wall versus the gradual wall on his balance bike. Also, there were some great friction lessons with the bike tires sliding down, will have to think about a follow up lesson for him on this one. The 3 year old tried a bit too, but was not quite ready to let gravity take over without his feet touching the ground. Sometimes you have to strap the helmets and wrist guards on tight, and let the kids experiment, with a small internal prayer that they will learn and evolve with minimal brusing.