Tools: made from stone, wood, bones, etc. but stone is the best preserved type. Both humans and animals use tools in some way. Earliest members of homo were closer to chimps than to us in their abilities to make tools and use them. Stone tools: preserve the best, from millions of years ago, and commonly used, and continue to be used occasionally. We will be looking at the evolution of stone tools, what they are and how they work. Flaked stone: fractured, not carved, from flint or obsidian. Flakes are what is removed, and the core is what is left. Flake or core used to make a tool. Direct or indirect percussion, and then retouching by additional flaking with pressure: not striking but pushing, creates different edge texture. Oldowan tool tradition: earliest well-described type of stone tools, from africa. Hammerstones (used to remove flakes from core), core tools, and flakes.