Week Six – Nervous System
Arrival Craft: Paper brain model from Scholastic model book.
Introduction: Our brains are the control systems of our bodies. They collect information from all over our bodies and send messages back.
We use special cells to carry these messages around, does anyone know what these cells are called?
They are neuron cells.
The central part of the neuron – a long thin body – is called the axon, and it is covered with myelin sheath, which is a fatty tissue that works as an electrical insulator.
Neurons have two ends: a receiving end with dendrites and a transmitting end called the axon terminal.
There is a cell body with a nucleus in the middle of the dendrites.
Individual task: Make neurons out of pipecleaners PipecleanerNeurons
Gather Together: Does anyone know how our nerves get information back to our brains for processing?
Nerves send messages using electrical signals, these travel up the spinal cord to the brain stem.
Does anyone know where our spinal cord is?
Show on the anatomy model.
Individual task: Give out polystyrene people, so the children can put brains and spinal cords onto their models. Brains
Break for drink and snack – Try to ice brains and spinal cords onto gingerbread cookies!
Regroup: Does anyone know the names of any of the parts of the brain? Look at the brain model together. Name the parts as you take them out, then ask the children to try and put them back in place.
I haven’t got human brains for us to dissect, I have sheep brains instead. Can anyone guess which part of the brain is much smaller on a sheep? The Cerebellum which is used for learning and co-ordination. Can anyone guess which part of the brain is larger on a sheep? The olfactory bulb, which is used for processing scents.
Individual task: Dissect brains. Children can look at pictures and try to identify regions of the brain.