Think of it like a game of catch with a friend. Your friend throws the ball to you, and you catch it and throw it back to your friend. But sometimes, your friend might throw the ball too hard or too far away, and you can't catch it properly. That's when you need some help, like a bigger mitt or your dad coaching you. This is kind of like what stimulus is in economics.
In the economy, sometimes things aren't going so great. People aren't spending money, businesses aren't making as much profit, and things just seem a bit slow and sluggish. This is called a recession or a downturn. To help out, the government can throw some money into the economy, like a ball, to try and get things moving again. This is called stimulus.
The idea is that if the government spends money on things like building new roads, giving people tax breaks, or giving out money directly to people in need, then they will have more money to spend on things they need or want. This will help businesses make more profits, which means they can hire more workers and buy more products, which helps other businesses, and the cycle keeps going.
Just like catching a ball, sometimes the government needs to add extra things to make sure the stimulus works properly. Sometimes they might need to give more money to certain areas that need it most, or they might need to change laws to make it easier for people to spend money. But the goal is always the same: to get the economy moving again and make sure everyone has a chance to succeed.