It used to be a unit about homes. Now, it is a unit about how living things adapt to different environments.
It used to be a unit about ancient civilizations. Now, it is a unit about how evidence is used to analyze the past.
It used to be a unit about plants. Now, it is a unit about how matter changes over time.
The students will still learn about homes. They will still investigate ancient civilizations. They will continue to look thoughtfully at plants.
But they will be learning so much more.