An electrical charge is like a special invisible property that all tiny pieces of stuff (called particles) have. There are two kinds of electrical charges: positive and negative.

An electrical charge is what makes tiny particles push or pull on each other.

An electrical current is like a river of tiny, invisible "energy units" (called electrical charges) flowing through something, usually a wire.

An electrical current is when electricity flows through a wire, like water flowing in a pipe.

An electrical circuit is a complete, unbroken loop or path that electricity can flow through.

An electrical circuit is a full circle path that electricity follows to make things work.

Conductors of electricity are materials that let electricity (those tiny "energy units" we talked about!) flow through them easily, like a clear road for cars.

Conductors of electricity are materials like copper wires that let electricity travel through them easily.

An insulator is a material that does not let electricity flow through it easily.

Think of an insulator as a blocked road or a dead end for electricity. The tiny "energy units" (electrical charges) can't move freely through these materials.

An incomplete circuit is like a broken path or a road with a gap that electricity can't get across.

Remember how an electrical circuit needs to be a complete, unbroken loop for electricity to flow? Well, an incomplete circuit is when that loop is broken somewhere.

A complete circuit is a full, unbroken circle or path that electricity can flow through from beginning to end.

In a complete circuit, the electricity starts at its power source (like a battery), travels through all the wires and devices (like a light bulb), and then flows all the way back to the power source. 

In an electrical circuit, there are two main ways to connect things: series and parallel.

Imagine a single road where all the houses are built one right after the other, in a straight line. That's how a series circuit works! Now imagine a main road with lots of smaller roads branching off, and each house has its own little driveway. That's a parallel circuit!