frange(), a range function with float increments (Python recipe) by Dinu Gherman ActiveState Code (http://code.activestate.com/recipes/66472/) Sadly missing in the Python standard library, this function allows to use ranges, just as the built-in function range(), but with float arguments. All thoretic restrictions apply, but in practice this is more useful than in theory.
When I worked at a daycare we would have bike day during the summer when kids, aged 3-5, could bring in their bikes and ride them, most of the kids were on big bikes with training wheels and a few of the 4-5 year olds were without training wheels.
While kids don't learn balance on a tricycle, they will learn steering and pedaling. At about age 2 1/2, you can start looking at kids bikes with training wheels. Remember that there should always be a little lean in the bike. Adjust the training wheels at slightly different heights to force your child to balance.he age for kids to ride a bike depends on several things. They must be physically capable and mentally ready to learn, their comfort level needs to be reached, and it must be fun. If it's not fun, your kid won't learn.