Get Focused

This lesson is focused on reviewing the topics covered in this unit

Consider the following essential questions as you complete Lesson 3:

• Have you mastered the terms present in the Science 20 glossary pertaining to modules 6-8 ?
• Are there any topics you may want to hear explained again (See video area)
• Did I do well on the lesson assignments or do my results indicate a need to revisit some of the lessons ?

Below is a list of video tutorials that can be used to review the various topics.

Lesson 3.6.1 __ The Long Beginning

Lesson 3.6.2 __ Early Life

Lesson 3.6.3 __Dating Fossils

Lesson 3.6.4__Pinpointing Time

Lesson 3.7.1__Cambrian Explosion

Lesson 3.7.2__Petroleum Formation

Lesson 3.7.3__Earthquakes

Lesson 3.7.4__Tectonics and Extinction

Lesson 3.8.1__The Icy Epoche

Lesson 3.8.2__Climate Change

Lesson Summary

In this lesson you reviewed Unit 3 content

In the next unit you will look at changes in living systems.