Paleolithic Period has contributed significant ways through key innovations-

(1) The shaping of an entire stone to a stereotyped tool form (plate 4A), and

(2) Chipping the stone from both sides to produce a symmetrical (bifacial) cutting edge (plate 3C).

•Hand Axe:  a stone tool with a cutting edge; the stone is held in the hand and used for chopping

•Spearhead: the sharp-pointed head that forms the piercing end of a spear

Shaping the tool with symmetric shape (plate 3C) is an extraordinary achievement during the Paleolithic Period. The shape and the size quite rightly determine the usage and purpose. Crusher (plate 3B) has to heavy and bolder in shape so that it covers larger space while smashing. The grip should provide maximum grip with all the fingers and held inside the palm. The arm in this case will behave like the handle of a hammer (plate 4A). The sharp blade of the hammerhead (plate 3D) is fixed on a longer handle for exerting maximum force.  Man’s arm functions with the help of fulcrum joint and the liver mechanism (plate 4B).

Manufacture shifted from flakes struck from a stone core to shaping a more massive tool by careful repetitive flaking. The most common tool materials were quartzite, glassy lava and flint.

Conclusion
Since the time of Paleolithic Period human being has created tools for their survival. Handheld tools are being designed and developed with great command. Man tried to understand the material for their appropriate applications. Material knowledge is one of the most important aspects for their survival. Indigenous materials rock, timber and clay provided multiple solutions. Hence, designing is an integral part of human behaviour. Curiosity and thrust for knowledge has always led man for innovation and newer solutions.