The oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state.
Most babies take their first steps sometime between 9 and 12 months and are walking well by the time they're 14 or 15 months old. Don't worry if your child takes a little longer, though. Some perfectly normal children don't walk until they're 16 or 17 months old.
We've also given typical ages, but keep in mind that this is just a rough guideline. Some kids walk as early as 9 months, others as late as 17 months. There's a wide range of normal ages for kids to start walking. If you're concerned about your child's progress, check with his doctor. Has step reflex. If held in a standing position on a hard surface, your newborn will move his legs as if he's walking.