Imagine you have a group of kids who all love playing with toys. But while they all enjoy playing with toys, they have different ideas about which toys are the best and how to play with them.
This is kind of like the different Jewish religious movements. They are all Jewish and follow many of the same religious teachings, but they have different ideas about how to practice their religion.
Orthodox Jews are like some kids who prefer to play with older toys that their grandparents played with. They think it's important to follow all the traditional Jewish laws and customs, just as they have been practiced for centuries.
Reform Jews, on the other hand, are like some kids who like newer toys that have come out in recent years. They still believe in being Jewish, but they think it's more important to adapt to modern times and use their own judgment about what Jewish laws and customs to follow.
Conservative Jews are like some kids who like both old and new toys. They think it's important to follow traditions, but they also believe in making changes to certain practices to fit into modern times.
These three movements (Orthodox, Reform, and Conservative) are the biggest ones in Judaism, but there are other smaller movements too, like Reconstructionist Judaism and Humanistic Judaism. Each one has its own unique way of thinking about being Jewish and practicing their religion. But despite their differences, they are all connected by the common bond of being Jewish.