Until fairly recently, scientists believed that because children’s brains are done growing by the age of 10, their brains are mature by 10 as well. This could not be further from the truth. Kids’ brains are still developing on a cellular level, in a process that won’t be completed until their mid-20s.
Children’s brains develop in fits and starts, with a first period of massive growth and development between the ages of 1 and 3, and a second during adolescence (between 11 and roughly 25). During these periods of heightened change, their brains are said to be highly “plastic,” meaning they adapt and grow rapidly in response to their environment.
Increased brain plasticity also means increased potential for learning because brain cells morph from their immature, inefficient “gray matter” state to their more mature and efficient “white matter” state, while building up to 100,000 new synapses per second. Brain cells talk to each other via synapses, and it’s a “use it or lose it” situation. The more brain cells talk to each other via these new connections, the greater the brain’s potential to process and learn.
The last part of the brain to mature is the frontal lobe, where organisation, time management and all those other executive function skills happen, so be patient. Middle and high school kids can’t possibly manage all the challenges school and society throws at them, so support kids as they try, fail and try again.
Brain power is built through challenge and “desirable difficulties,” learning tasks that lie just a bit beyond our ability level or comfort zone. The more our kids see us take on challenges and learn from our mistakes, the more likely they will be to do the same.
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