Age Appropriate Activity

My fourth grade lesson plan was creating positive and negative monsters during Halloween time. My project is age appropriate because I got my main idea out of the core curriculum so I know that it is an appropriate activity. The students use positive and negative space to create any kind of monster they want. They need to be able to identify positive and negative space and use it correctly. They will be able to this by the end of the activity after being shown examples and looking at their own creations. This is something that needs to be taught in fourth grade.