Our earliest technology?
Collection of Stone Tools-related articles from Science Daily
https://www.sciencedaily.com/terms/stone_tool.htm
Prehistoric Stone Tools – Good images of various prehistoric stone tools
http://www.sfu.museum/journey/an-en/secondaire1er-middle/outils_prehistoriques-prehistoric_tools
Basic Stone Tools: A Beginner's Guide for College Students http://pages.ucsd.edu/~dkjordan/arch/tools.html
A Fresh Look at These Stone Tools Reveals a New Chapter of Ancient Chinese History https://www.smithsonianmag.com/science-nature/stone-tools-ancient-chinese-history-180970850/
Newsela - Earth's earliest humans had very inventive stone tools
https://newsela.com/read/early-humans-stone-tools/id/41420/
Videos
In the News: Video - Pyroengineering
http://www.pbs.org/wnet/humanspark/video/in-the-news-video-pyroengineering/268/
Video - Making Stone Tools Is So Millions of Years Ago http://www.pbs.org/wnet/humanspark/featured/spark-blog-video-making-stone-tools-is-sooo-millions-of-years-ago/301/
Open Learn 360 in a new tab, then click on the following links to watch the videos:
The Wheel: The Mother of All Inventions
The Bow and Arrow, Gun, Atomic Bomb: Origins- The History of Everything!