Students explore names, characteristics and traditions of the seasons and observe weather changes throughout the year.

Students research the Earth's patterns of rotation and revolution, create a chart and graph of these patterns and use them to explain the causes of night and day and summer and winter.

High schoolers use computer images to explain why the Earth has seasons and examine the phases of the moon. They create 3-D images and present them to the class. They answer a series of questions at the end of the lesson.

Students describe how wedge and lever makes work easier. In this physics activity, students analyze experimental data by creating a graph to see the trends. They calculate the work done and mechanical advantage of these simple machines.