Wikipedia offers an overall description of neurons. This site describes their physical appearance, the different parts of neurons, and what their functions are.

Engaging site for K-12 students to learn more about how the brain functions-- and have some fun at the same time.

Engaging site for K-12 students to learn more about how the brain functions-- and have some fun at the same time.

Use this site to learn how to make a neuron. This site shows students a step by step process for creating a model of a neuron. Teachers and students alike will appreciate this multi-sensory approach to learning.

Very good introduction to the role that these chemicals play in the nervous system.

Very good introduction to the role that these chemicals play in the nervous system.

Very good introduction to the role that these chemicals play in the nervous system.

Good explanation (including a simple animated GIF) of neurotransmitters and their history. Excellent, in-depth information.

Good explanation (including a simple animated GIF) of neurotransmitters and their history. Excellent, in-depth information.

Good explanation (including a simple animated GIF) of neurotransmitters and their history. Excellent, in-depth information.

Very good introduction to the role that these chemicals play in the nervous system.

Very good introduction to the role that these chemicals play in the nervous system.

Very good introduction to the role that these chemicals play in the nervous system.

Very good introduction to the role that these chemicals play in the nervous system.