Here is a resource with a descriptive approach to explaining the scientific method. It's simple, but effective for both introduction and reinforcement of this concept. 

Introduce your class to the layers of abstraction of the Internet with a lesson on the HTTP protocol. Pupils review previous lessons on levels of the Internet, then investigate new high levels by examining the HTTP traffic on...

Learn how to summarize a text based on the main idea and supporting details you found.

Learn what a summary is and how to write an objective summary of an informational text by using a list of guiding questions.