Connectionism is basically like a group of friends playing together.
Each of the friends is a neuron, and they talk to each other by passing messages back and forth. Just like how you might tell your friend about something you learned at school, these neurons tell each other information.
When the neurons are connected together, they form a network. And that network can do things like learn and solve problems.
Just like how you and your friends can help each other with homework, these neurons can work together to help you learn new things.
So, connectionism is all about how these neurons work together to create complex behaviors and thinking, just like how friends work together to create fun games and solve problems.