Students practice identifying the types of variation from equations and solving problems of different types of variation.

In this online activity, learners discover how random variation influences biological evolution. Biological evolution is often thought of as a process by which adaptation is generated through selection.Œć While it is recognized that random variation underlies the process, emphasis is usually placed on selection and resulting adaptation, leaving a sense that it is selection that drives evolution.Œć This simulation highlights the creative role of random variation, offering a somewhat different perspective: that of evolution as open-ended exploration driven by randomness and constrained by selection, with adaptation as a dynamic, transient consequence rather than an objective.

This instructional plan will help teachers guide students’ composition of rhythmic variations. In this lesson, students will listen to musical examples of variations, discuss the aesthetic and artistic value of musical arrangements, and write their own rhythmic variations on scales and melodies.

Students explore different ways to change a simple sentence and melody to understand the concept of theme and variation.